# 15 minutes offertes with Céline Letellier

> Ce rendez-vous permet de faire le bilan de votre relation actuelle, je vous donne des clefs de compréhension et de transformation concrètes afin de sortir des conflits qui tournent en boucle et reprendre le pouvoir sur votre vie.

- Host: Céline Letellier
- Duration: 15 min
- Location: Google Meet
- Host time zone: Europe/Paris
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/celineletellier/15-minutes-offertes
- Event type id: 6770523

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=6770523&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": 6770523,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "attendeePhoneNumber": "…",
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address)
- Optional fields: `attendeePhoneNumber` (Phone number), `notes` (Additional notes), `guests` (Add guests)
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.