diff --git a/src/main/java/org/codedifferently/LanAppointment.java b/src/main/java/org/codedifferently/LanAppointment.java
new file mode 100644
index 0000000..438ea0e
--- /dev/null
+++ b/src/main/java/org/codedifferently/LanAppointment.java
@@ -0,0 +1,28 @@
+package org.codedifferently;
+
+import java.time.LocalDateTime;
+
+public class LanAppointment {
+
+    private String patientID;
+    private LocalDateTime time;
+    private boolean isCompleted;
+
+    public LanAppointment(String patientID, LocalDateTime time) {
+        this.patientID = patientID;
+        this.time = time;
+        this.isCompleted = false;
+    }
+
+    public String getPatientID() { return patientID; }
+    public LocalDateTime getTime() { return time; }
+    public boolean isCompleted() { return isCompleted; }
+
+    public void complete() { isCompleted = true; }
+
+    public String toString() {
+        return "PatientID: " + patientID +
+                " | Time: " + time +
+                " | Completed: " + isCompleted;
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/org/codedifferently/LanClinicApp.java b/src/main/java/org/codedifferently/LanClinicApp.java
new file mode 100644
index 0000000..e1c7239
--- /dev/null
+++ b/src/main/java/org/codedifferently/LanClinicApp.java
@@ -0,0 +1,105 @@
+package org.codedifferently;
+
+import java.util.Scanner;
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+
+public class LanClinicApp {
+
+    public static void main(String[] args) {
+
+        LanClinicSystem clinic = new LanClinicSystem();
+        Scanner sc = new Scanner(System.in);
+
+        DateTimeFormatter formatter =
+                DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm");
+
+        boolean running = true;
+
+        while (running) {
+
+            System.out.println("\n=== CLINIC MENU ===");
+            System.out.println("1 Add Patient");
+            System.out.println("2 View Patients");
+            System.out.println("3 Check In Patient");
+            System.out.println("4 Search Patient");
+            System.out.println("5 Schedule Appointment");
+            System.out.println("6 Cancel Appointment");
+            System.out.println("7 View Schedule");
+            System.out.println("8 Daily Report");
+            System.out.println("9 Exit");
+            System.out.println("10 Complete Appointment");
+
+
+            System.out.print("Choice: ");
+            System.out.println("===========================================1");
+            String choice = sc.nextLine();
+
+            switch(choice) {
+
+                case "1":
+                    System.out.print("Name: ");
+                    clinic.addPatient(sc.nextLine());
+                    break;
+
+                case "2":
+                    clinic.viewAllPatients();
+                    break;
+
+                case "3":
+                    System.out.print("ID or Name: ");
+                    clinic.checkInPatient(sc.nextLine());
+                    break;
+
+                case "4":
+                    System.out.println("================================");
+                    System.out.print("ID or Name: ");
+                    System.out.println(clinic.searchPatient(sc.nextLine()));
+                    break;
+
+                case "5":
+                    System.out.println("================================");
+                    System.out.print("Patient ID: ");
+                    clinic.scheduleAppointment(sc.nextLine());
+                    break;
+
+                case "6":
+                    System.out.println("=================================");
+                    System.out.print("Patient ID: ");
+                    clinic.cancelAppointment(sc.nextLine());
+                    break;
+
+                case "7":
+                    clinic.viewSchedule();
+                    break;
+
+                case "8":
+                    clinic.dailySummary();
+                    break;
+
+                case "9":
+                    running = false;
+                    break;
+
+                case "10":
+                    try {
+                        System.out.println("=============================");
+                        System.out.print("Patient ID: ");
+                        String id = sc.nextLine();
+
+                        System.out.print("DateTime yyyy-MM-dd HH:mm: ");
+                        LocalDateTime time =
+                                LocalDateTime.parse(sc.nextLine(), formatter);
+
+                        clinic.completeAppointment(id, time);
+
+                    } catch(Exception e) {
+                        System.out.println("Invalid format.");
+                    }
+                    break;
+            }
+        }
+
+        sc.close();
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/org/codedifferently/LanClinicSystem.java b/src/main/java/org/codedifferently/LanClinicSystem.java
new file mode 100644
index 0000000..20ab15c
--- /dev/null
+++ b/src/main/java/org/codedifferently/LanClinicSystem.java
@@ -0,0 +1,270 @@
+package org.codedifferently;
+
+import java.time.*;
+import java.time.format.DateTimeFormatter;
+import java.util.*;
+
+public class LanClinicSystem {
+
+    private ArrayList<LanPatient> patients;
+    private ArrayList<LanAppointment> appointments;
+    private HashMap<LocalDateTime, Queue<String>> waitlistMap;
+
+    public LanClinicSystem() {
+        patients = new ArrayList<>();
+        appointments = new ArrayList<>();
+        waitlistMap = new HashMap<>();
+    }
+
+    // ---------------- PATIENT ----------------
+
+    public void addPatient(String name) {
+        LanPatient p = new LanPatient(name);
+        patients.add(p);
+        System.out.println("Patient added. ID: " + p.getID());
+    }
+
+    public void viewAllPatients() {
+        if (patients.isEmpty()) {
+            System.out.println("No patients.");
+            return;
+        }
+        for (LanPatient p : patients) {
+            System.out.println(p);
+        }
+    }
+
+    public LanPatient searchPatient(String input) {
+        for (LanPatient p : patients) {
+            if (p.getID().equalsIgnoreCase(input)
+                    || p.getName().equalsIgnoreCase(input)) {
+                return p;
+            }
+        }
+        return null;
+    }
+
+    public void checkInPatient(String input) {
+        LanPatient p = searchPatient(input);
+        if (p == null) {
+            System.out.println("Patient not found.");
+            return;
+        }
+
+        if (p.isCheckedIn()) {
+            System.out.println("Already checked in.");
+        } else {
+            p.checkIn();
+            System.out.println("Checked in.");
+        }
+    }
+
+    // ---------------- VALIDATION ----------------
+
+    private boolean isSlotAvailable(LocalDateTime time) {
+        for (LanAppointment a : appointments) {
+            if (a.getTime().equals(time)) return false;
+        }
+        return true;
+    }
+
+    private boolean hasAppointmentSameDay(String patientID, LocalDate date) {
+        for (LanAppointment a : appointments) {
+            if (a.getPatientID().equals(patientID)
+                    && a.getTime().toLocalDate().equals(date)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    // ---------------- SCHEDULE ----------------
+
+    public void scheduleAppointment(String patientID) {
+
+        Scanner sc = new Scanner(System.in);
+        DateTimeFormatter formatter =
+                DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm");
+
+        try {
+
+            LocalDate today = LocalDate.now();
+            LocalDate maxDate = today.plusDays(7);
+
+            System.out.print("Enter date (yyyy-MM-dd): ");
+            LocalDate date = LocalDate.parse(sc.nextLine());
+
+            if (date.isBefore(today) || date.isAfter(maxDate)) {
+                System.out.println("Must be within 7 days.");
+                return;
+            }
+
+            if (hasAppointmentSameDay(patientID, date)) {
+                System.out.println("Already has appointment that day.");
+                return;
+            }
+
+            ArrayList<LocalDateTime> slots = new ArrayList<>();
+            LocalTime start = LocalTime.of(9,0);
+            LocalTime end = LocalTime.of(17,0);
+
+            while (!start.isAfter(end.minusMinutes(30))) {
+                slots.add(LocalDateTime.of(date, start));
+                start = start.plusMinutes(30);
+            }
+
+            System.out.println("\n--- Time Slots ---");
+            for (int i=0;i<slots.size();i++) {
+                LocalDateTime slot = slots.get(i);
+
+                if (isSlotAvailable(slot)) {
+                    System.out.println((i+1)+". "+slot.format(formatter)+" (Available)");
+                } else {
+                    System.out.println((i+1)+". "+slot.format(formatter)+" (Taken)");
+                }
+            }
+
+            System.out.print("Choose slot #: ");
+            int choice = Integer.parseInt(sc.nextLine());
+
+            if (choice < 1 || choice > slots.size()) return;
+
+            LocalDateTime chosen = slots.get(choice-1);
+
+            if (isSlotAvailable(chosen)) {
+
+                appointments.add(new LanAppointment(patientID, chosen));
+                System.out.println("Appointment scheduled.");
+
+            } else {
+
+                System.out.print("Join waitlist? (Y/N): ");
+                String ans = sc.nextLine();
+
+                if (ans.equalsIgnoreCase("Y")) {
+                    waitlistMap.putIfAbsent(chosen, new LinkedList<>());
+                    waitlistMap.get(chosen).add(patientID);
+                    System.out.println("Added to waitlist.");
+                }
+            }
+
+        } catch (Exception e) {
+            System.out.println("Invalid input.");
+        }
+    }
+
+    // ---------------- CANCEL ----------------
+
+    public void cancelAppointment(String patientID) {
+
+        Scanner sc = new Scanner(System.in);
+        DateTimeFormatter formatter =
+                DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm");
+
+        try {
+
+            System.out.print("Enter date/time: ");
+            LocalDateTime time =
+                    LocalDateTime.parse(sc.nextLine(), formatter);
+
+            LanAppointment remove = null;
+
+            for (LanAppointment a : appointments) {
+                if (a.getPatientID().equals(patientID)
+                        && a.getTime().equals(time)) {
+                    remove = a;
+                    break;
+                }
+            }
+
+            if (remove == null) {
+                System.out.println("Not found.");
+                return;
+            }
+
+            appointments.remove(remove);
+            System.out.println("Cancelled.");
+
+            // WAITLIST AUTO FILL
+            if (waitlistMap.containsKey(time)) {
+
+                Queue<String> queue = waitlistMap.get(time);
+
+                if (!queue.isEmpty()) {
+
+                    String next = queue.poll();
+                    appointments.add(new LanAppointment(next, time));
+
+                    System.out.println("Waitlist patient auto-booked.");
+
+                    if (queue.isEmpty()) {
+                        waitlistMap.remove(time);
+                    }
+                }
+            }
+
+        } catch (Exception e) {
+            System.out.println("Invalid format.");
+        }
+    }
+
+    // ---------------- COMPLETE ----------------
+
+    public void completeAppointment(String patientID, LocalDateTime time) {
+
+        for (LanAppointment a : appointments) {
+
+            if (a.getPatientID().equals(patientID)
+                    && a.getTime().equals(time)) {
+
+                LanPatient p = searchPatient(patientID);
+
+                if (!p.isCheckedIn()) {
+                    System.out.println("Patient must check in first.");
+                    return;
+                }
+
+                a.complete();
+                p.checkOut();
+                System.out.println("Appointment completed.");
+                return;
+            }
+        }
+
+        System.out.println("Appointment not found.");
+    }
+
+    // ---------------- VIEW ----------------
+
+    public void viewSchedule() {
+
+        if (appointments.isEmpty()) {
+            System.out.println("No appointments.");
+            return;
+        }
+
+        appointments.sort(Comparator.comparing(LanAppointment::getTime));
+
+        for (LanAppointment a : appointments) {
+            System.out.println(a);
+        }
+    }
+
+    public void dailySummary() {
+
+        LocalDate today = LocalDate.now();
+
+        int total = 0;
+        int completed = 0;
+
+        for (LanAppointment a : appointments) {
+            if (a.getTime().toLocalDate().equals(today)) {
+                total++;
+                if (a.isCompleted()) completed++;
+            }
+        }
+
+        System.out.println("Appointments Today: " + total);
+        System.out.println("Completed Today: " + completed);
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/org/codedifferently/LanPatient.java b/src/main/java/org/codedifferently/LanPatient.java
new file mode 100644
index 0000000..f37f0cd
--- /dev/null
+++ b/src/main/java/org/codedifferently/LanPatient.java
@@ -0,0 +1,33 @@
+package org.codedifferently;
+
+import java.util.UUID;
+
+public class LanPatient {
+
+    private String name;
+    private String ID;
+    private boolean isCheckedIn;
+
+    public LanPatient(String name) {
+        this.name = name;
+        this.ID = generateID(name);
+        this.isCheckedIn = false;
+    }
+
+    private String generateID(String name) {
+        return name.substring(0,1).toUpperCase()
+                + UUID.randomUUID().toString().substring(0,5);
+    }
+
+    public String getName() { return name; }
+    public String getID() { return ID; }
+    public boolean isCheckedIn() { return isCheckedIn; }
+
+    public void checkIn() { isCheckedIn = true; }
+    public void checkOut() { isCheckedIn = false; }
+
+    public String toString() {
+        return "ID: " + ID + " | Name: " + name +
+                " | Checked In: " + isCheckedIn;
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/org/codedifferently/MichaelPatient.java b/src/main/java/org/codedifferently/MichaelPatient.java
new file mode 100644
index 0000000..6cc3f3d
--- /dev/null
+++ b/src/main/java/org/codedifferently/MichaelPatient.java
@@ -0,0 +1,28 @@
+package org.codedifferently;
+
+public class  MichaelPatient {
+
+    private String name;
+    private String ID;
+    private boolean isCheckedIn;
+
+    MichaelPatient(String Name, String ID, boolean isCheckedIn) {
+        this.name=Name;
+        this.ID=ID;
+        this.isCheckedIn=false;
+
+
+    }
+
+    public void setName(String name) {
+        this.name=name;
+
+    }
+
+    public void setID(String ID) {
+        this.ID=ID;
+
+    }
+
+
+}