# Book a Discovery Call with Ilkka S. / Affiliate Partners

> Whether you're looking to become an investor or an affiliate partner, this call is an opportunity to ask questions, review the strategy, and understand how everything works before making any decisions.

- Host: Ilkka S. / Affiliate Partners
- Duration: 15 min
- Location: Cal Video
- Host time zone: Asia/Dubai
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/sonicaiaffiliates/book-a-discovery-call
- Event type id: 6564368

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=6564368&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": 6564368,
  "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.