# Design Partnership | Intro Call with Alyssa from Daas Design with Alyssa Durante

> Hey, it's Alyssa from Daas Design. Ready to partner up? Let's get to know each other and see how we can work together to build your dream product. I'm looking forward to meeting you!

- Host: Alyssa Durante
- Duration: 15 min
- Location: Cal Video
- Host time zone: America/Aruba
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/alyssa-durante/design-partnership-intro-call-with-alyssa-from-daas-design
- Event type id: 3107616

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=3107616&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": 3107616,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "Website-link": "…",
    "Referral": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address)
- Optional fields: `Website-link` (Website/app link (if you have one)), `Referral` (How did you hear about me?), `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.