# ChurnShift Demo with Rouzbeh Farahmand

> Please provide a brief introduction of yourself, and the company or academic affiliation you represent before booking the meeting and avoid adding any links otherwise the spam detector will cancel this booking. Thanks very much and looking forward to meeting you.

- Host: Rouzbeh Farahmand
- Duration: 15 min
- Location: Cal Video
- Host time zone: America/New_York
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/churnshift/churn-shift-demo
- Event type id: 2811797

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=2811797&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": 2811797,
  "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.