If the user wants to cancel:

1. Confirm which appointment (use ID from `get_appointments` if needed)

2. Call `cancel_or_reschedule_appointment` with:
   {
     "appointment_id": "<ID>",
     "action": "cancel"
   }

3. Acknowledge the cancellation

If they want to move a booking:

1. Ask for the new desired start time (and timezone if unclear)

2. Call `cancel_or_reschedule_appointment` with:
   {
     "appointment_id": "<ID>",
     "action": "reschedule",
     "new_start_time": "<YYYY-MM-DDTHH:MM:SS>",
     "timezone": "<IANA TZ>"
   }

3. Confirm the new time

User: "Cancel my appointment"
Agent: [finds appointment with get_booked_appointments]
       [cancels with action="cancel"]
       "Cancelled! Your [DATE] at [TIME] appointment has been removed."

User: "Move my Tuesday 2pm to Wednesday 2pm"
Agent: [reschedules with new date, same time]
       "Done! You're now Wednesday at 2pm instead."

User: "I'm running late, can we push back 30 minutes?"
Agent: [gets current appointment]
       [reschedules to 30 min later]
       "No worries! I've moved you from 2pm to 2:30pm."

User: "That time doesn't work anymore"
Agent: "What would work better?"
User: "Do you have anything in the morning?"
Agent: [fetches morning slots]
       "I have 9am and 10:30am. Prefer one?"
User: "9am"
Agent: [reschedules to 9am]

Before running cancel action:
"Just to confirm - you want to cancel your [DATE] at [TIME] 
appointment, correct?"

[Wait for confirmation]

[Then cancel]

After cancelling:
"Your appointment is cancelled. Would you like to schedule 
a different time, or just leave it for now?"

If yes: [run fetch_free_slots]

Before rescheduling:
1. Run fetch_free_slots for desired day
2. Verify new_start_time is in the available slots
3. Then reschedule

This prevents double-booking.

After booking or fetching appointments:
Store appointment_id in conversation memory

Use it for cancel/reschedule without asking user for it

{
  "status": "success",
  "message": "Appointment cancelled",
  "appointment_id": "appt_abc123"
}

{
  "status": "success",
  "message": "Appointment rescheduled",
  "appointment_id": "appt_abc123",
  "new_start_time": "2025-01-16T14:30:00",
  "timezone": "America/New_York"
}

{
  "status": "error",
  "message": "Appointment not found"
}

User: "I need to change my appointment"

Agent: [gets current appointment]
       "You're booked for [DATE] at [TIME]. What works better?"

User: "Friday afternoon"

Agent: [fetches Friday slots]
       "Friday I have 2pm, 3pm, and 4pm. Prefer one?"

User: "3pm"

Agent: [reschedules to Friday 3pm]
       "Perfect! Moved from [OLD TIME] to Friday 3pm."

[System detects no-show]

Agent: Calls customer next day

Agent: "Hi! We missed you yesterday at [TIME]. Everything okay?"

User: "Oh no, I completely forgot!"

Agent: [gets appointment ID from yesterday]
       "No worries! Want to reschedule?"

User: "Yes please"

Agent: [fetches available slots]
       [reschedules appointment]

[Business needs to reschedule due to emergency]

Agent: Calls customer

Agent: "Hi! We need to reschedule your [DATE] appointment. 
        We have [ALTERNATIVE TIMES]. Any of those work?"

User: "Tuesday at 10am"

Agent: [reschedules appointment]
       "You're rebooked for Tuesday at 10am. Sorry for the inconvenience!"

## Complete Appointment Management

### Check Existing
Run get_booked_appointments

### If Appointment Found:
"You have [DATE] at [TIME]. Keep it, reschedule, or cancel?"

**Option 1: Keep**
"Great! See you then."

**Option 2: Reschedule**
"What day would work better?"
[Run fetch_free_slots]
"I have [TIMES]. Which works?"
[Run cancel_or_reschedule_appointment with action="reschedule"]
"You're rebooked for [NEW TIME]!"

**Option 3: Cancel**
"Cancel completely, or want to rebook for later?"
[If cancel only: Run cancel_or_reschedule_appointment with action="cancel"]
[If rebook: Fetch slots then reschedule]