# 30-Minute Demo – Buyer Procurement Software with David Harding

> A tailored walkthrough of our buyer-side procurement platform, designed to streamline sourcing, supplier management, and contract oversight. We’ll show how you can reduce administrative burden, improve visibility across your supply chain, and manage procurement activities more efficiently. The session will focus on your specific use case and organisational needs. Ideal for: • Procurement teams and contracting authorities • Organisations managing multiple suppliers or tenders • Buyers seeking better oversight and control

- Host: David Harding
- Duration: 30 min
- Location: Google Meet
- Host time zone: Europe/London
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/esourcing-data/30-minute-demo-buyer-procurement-software
- Event type id: 5114151

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=5114151&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": 5114151,
  "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.