# Transformation with Alice - ASTERRA

> Un échange de 45 min pour discuter de la transformation d’un bijou que vous possédez déjà. Nous étudierons ensemble vos pierres et métaux afin de leur donner une nouvelle vie dans l’un des modèles ASTERRA. Vous recevrez ensuite un devis personnalisé.

- Host: Alice - ASTERRA
- Duration: 45 min
- Location: Google Meet
- Host time zone: Europe/Paris
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/asterra-joaillerie/transformation
- Event type id: 3243503

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=3243503&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": 3243503,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address)
- Optional fields: `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.