# Discovery Call with David Flynn

> Let’s talk about your business and see where AI or automation could actually help. In 30 minutes, we’ll look at what’s working, what’s slowing things down, and what can be improved with smarter tools.

- Host: David Flynn
- Duration: 30 min
- Location: Google Meet
- Host time zone: America/Chicago
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/automatic/discovery
- Event type id: 158008

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=158008&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": 158008,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "notes": "…",
    "attendeePhoneNumber": "…",
    "website": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `notes` (What are you looking to build?)
- Optional fields: `attendeePhoneNumber` (Phone number), `website` (Website URL), `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.