# Book a Free 15-Min Discovery Call with Surojit Chakraverti

> Looking to elevate your team’s corporate training or gain expert insights through financial analysis and consulting? In just 15 minutes, we’ll explore your unique requirements—whether corporate or personal. On this call, we’ll discuss: Tailored training programs designed to upskill your team Financial analysis or consulting solutions to address your business challenges How our expertise can help you achieve your goals 📅 Book your call today and take the first step toward transforming your team’s learning or strategy approach.

- Host: Surojit Chakraverti
- Duration: 15 min
- Location: Cal Video, Zoom Video
- Host time zone: Europe/London
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/surojitchakraverti/15min
- Event type id: 1423381

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=1423381&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": 1423381,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "What-are-you-preparing-for-right-now": "…",
    "Which-part-of-the-site-have-you-used-most": "…",
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `What-are-you-preparing-for-right-now` (What are you preparing for right now?), `Which-part-of-the-site-have-you-used-most` (Which part of the site have you used most?)
- 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.
- `location` is optional; without it the booking uses the event’s first location.