# AI Strategy Call with Harald Ostermann

> 30 minutes, free of charge and confidential, via video with Harald Ostermann. For executives and leaders: Where does your company stand on AI, where are the biggest levers, and how can you put AI into practice in a structured and responsible way? You will leave the call with a clear assessment and concrete next steps.

- Host: Harald Ostermann
- Duration: 30 min
- Location: Cal Video
- Host time zone: Europe/Berlin
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/harald-ostermann/strategy-call
- Event type id: 7897747

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=7897747&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": 7897747,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "unternehmen": "…",
    "position": "…",
    "ki-nutzung": "…",
    "herausforderung": "…",
    "attendeePhoneNumber": "…",
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `unternehmen` (Company), `position` (Job title), `ki-nutzung` (How intensively do you already use AI today?), `herausforderung` (What is currently your biggest challenge when it comes to AI?)
- Optional fields: `attendeePhoneNumber` (Phone number), `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.