# Initial Chat 15 minutes with Make Changes NLP & Hypnotherapy

> Book in a time for a phone call with Wendy. No obligation and free. We'll discuss whether now is a good time to make some positive changes in your life with Hypnotherapy and NLP, and work out if we're a good fit to work together.

- Host: Make Changes NLP & Hypnotherapy
- Duration: 30 min
- Location: Google Meet, Phone call
- Host time zone: Australia/Melbourne
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/makechanges/initial-chat-15-minutes
- Event type id: 5703253

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=5703253&start=YYYY-MM-DD&end=YYYY-MM-DD&timeZone=<IANA time zone>
cal-api-version: 2024-09-04
```

The response is `{"data":{"YYYY-MM-DD":[{"start":"<ISO 8601 with offset>"}]}}`; no API key is needed.

## Book

```http
POST https://api.cal.com/v2/bookings
cal-api-version: 2026-02-25
Content-Type: application/json

{
  "eventTypeId": 5703253,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "bookingFieldsResponses": {
    "attendeePhoneNumber": "…",
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `attendeePhoneNumber` (Phone number)
- Optional fields: `notes` (Additional notes)
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.
- `location` is optional; without it the booking uses the event’s first location.