# 15-Min-Erstgespräch Verhandlungstraining with Ralf Elcheroth

> Sie überlegen, Ihr Einkaufsteam im Verhandeln zu stärken? In 15 Minuten am Telefon klären wir, wo Sie stehen, was Sie erreichen wollen und ob ein Negtar-Training dazu passt. Kostenlos und unverbindlich. Ich rufe Sie zur gebuchten Zeit an. Ralf Elcheroth, Negtar GmbH

- Host: Ralf Elcheroth
- Duration: 15 min
- Location: Attendee phone number
- Host time zone: Europe/Berlin
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/ralf-elcheroth-vny4zk/negtar-erstgespraech
- Event type id: 7910841

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=7910841&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": 7910841,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "location": {
    "type": "attendeePhone",
    "phone": "…"
  },
  "bookingFieldsResponses": {
    "firma": "…",
    "anliegen": "…"
  }
}
```

- Required fields: `name` (Ihr Name), `email` (Ihre E-Mail-Adresse), `firma` (Unternehmen)
- Optional fields: `anliegen` (Worum geht es Ihnen?)
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.
- `location` is required: `location.phone` is the attendee’s own.