# Firen AI - Discovery / Demo with Eric F

- Host: Eric F
- Duration: 30 min
- Location: Cal Video
- Host time zone: America/Chicago
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/firen-ai/intro-demo-45
- Event type id: 4275531

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=4275531&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": 4275531,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "pms": "…",
    "attendeePhoneNumber": "…",
    "locationNum": "…",
    "Which-product-s--are-you-interested-in": "…",
    "leadSource": "…",
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `pms` (What PMS are you on?), `attendeePhoneNumber` (Phone Number (to call / reschedule just in case)), `locationNum` (How many locations is your group (if more than 1)?), `Which-product-s--are-you-interested-in` (Which product(s) are you interested in?), `leadSource` (How did you hear about us?)
- Optional fields: `guests` (Add guests), `notes` (Additional notes)
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.