# Intro call: private cloud & platform engineering with Usman Garba

> A no-obligation call to talk through your infrastructure: an OpenStack or Kubernetes platform you want to build, a cluster that needs taming, or GitOps and observability you want in place. Bring the problem, and you'll leave with an honest view of the options, whether or not we end up working together.

- Host: Usman Garba
- Duration: 30 min
- Location: Google Meet
- Host time zone: Europe/Amsterdam
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/auf3-usman/intro
- Event type id: 7328925

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=7328925&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": 7328925,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "What-would-you-like-to-discuss": "…",
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `What-would-you-like-to-discuss` (What would you like to discuss?)
- 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.