# Discovery Call with Halim with Abdelhaleem Elgamal

> Thank you for reaching this stage so far! During this session, we’ll discuss your project ideas, goals, and how I can help bring them to life using Webflow and my expertise in UX design. Feel free to share any relevant details or questions in advance, so we can make the most of our time. Looking forward to collaborating with you!

- Host: Abdelhaleem Elgamal
- Duration: 15, 20, 30 min
- Location: Google Meet
- Host time zone: America/New_York
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/abdelhalim/30min
- Event type id: 265813

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=265813&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": 265813,
  "start": "<UTC ISO 8601 start from the slots response>",
  "lengthInMinutes": 30,
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "title": "…",
    "attendeePhoneNumber": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `title` (What is this meeting about?)
- Optional fields: `attendeePhoneNumber` (Phone number), `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.
- `lengthInMinutes` picks one of 15, 20, 30; pass the same value to the slots request as `duration`.