# Halal Guide - Ready to start halal investing with Nisba

> Salaam, Please book in a time that suits you. We will discuss your situation and see if the Academy is the right fit. Ideally you will be looking to start or refine your halal investing journey in the next 30 days and can invest at least £500 a month. This call is recorded with AI, please let us know if you would like us to remove. Adel, Ahmad and the nisba team

- Host: Nisba
- Duration: 20 min
- Location: Google Meet
- Host time zone: Europe/London
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/nisba/halal-guide-ready-to-start-halal-investing
- Event type id: 5732930

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=5732930&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": 5732930,
  "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.