# 15-Minute Fit Call with Ben Sherry

> Let's explore if a Signature Masterclass is the right fit for you at this time.

- Host: Ben Sherry
- Duration: 15 min
- Location: Zoom
- Host time zone: Asia/Taipei
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/bensherry.io/15min-fitcall
- Event type id: 6617853

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=6617853&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": 6617853,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "bookingFieldsResponses": {
    "What-do-you-sell--and-for-how-much": "…",
    "How-many-people-have-you-helped-with-your-current-offer": "…",
    "Are-you-comfortable-speaking-to-an-audience-of-10--people": "…",
    "Do-you-promise-to-show-up-to-the-call-on-time": "…",
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `What-do-you-sell--and-for-how-much` (What do you sell, and for how much?), `How-many-people-have-you-helped-with-your-current-offer` (How many people have you helped with your current offer?), `Are-you-comfortable-speaking-to-an-audience-of-10--people` (Are you comfortable speaking to an audience of 10+ people?), `Do-you-promise-to-show-up-to-the-call-on-time` (Do you promise to show up to the call on time? 🥲)
- Optional fields: `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.