# Automate Your Workflow | Free 15-Minute Discovery Call with Rayhan Ahmed

> Hi, Here's what happens in this call: → I listen to how your team currently handles the workflow you want to automate. No assumptions; just your actual process. → We figure out together which parts are automatable right now and what a real build would look like. → You leave with a clear picture of what's possible, what it takes, and whether it makes sense to move forward. No pitch. No pressure. Just 15 minutes and a straight answer. — Saymon

- Host: Rayhan Ahmed
- Duration: 15 min
- Location: Google Meet
- Host time zone: Asia/Dhaka
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/rayhan-ahmed-saymon/15min
- Event type id: 5503542

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=5503542&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": 5503542,
  "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.