# Discovery Call | Of Heaven and Earth with Delfina

> A free 30-minute conversation to explore what brings you here, what you're longing for, and whether working together might feel right for you. There's nothing you need to prepare. Come as you are.

- Host: Delfina
- Duration: 30 min
- Location: Zoom Video
- Host time zone: America/Buenos_Aires
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/ofheavenandearth/discovery-call
- Event type id: 7419411

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=7419411&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": 7419411,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "title": "…",
    "attendeePhoneNumber": "…",
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `title` (What brings you here?)
- Optional fields: `attendeePhoneNumber` (Phone number), `notes` (Is there anything else you'd like me to know before we meet?), `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.