# 15-minute AR cleanup call with Ramon Prieto

> A short call to see whether Makewhole can help clean up overdue invoices in QuickBooks with approval-gated, relationship-safe follow-up.

- Host: Ramon Prieto
- Duration: 15 min
- Location: Google Meet
- Host time zone: America/Denver
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/ramon-makewhole/15min
- Event type id: 6190421

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=6190421&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": 6190421,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "Do-you-use-QuickBooks-Online": "…",
    "Roughly-how-much-is-currently-30--days-overdue": "…",
    "Anything-specific-you-want-help-cleaning-up": "…",
    "Who-handles-invoice-follow-up-today": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `Do-you-use-QuickBooks-Online` (Do you use QuickBooks Online?), `Roughly-how-much-is-currently-30--days-overdue` (Roughly how much is currently 30+ days overdue?), `Anything-specific-you-want-help-cleaning-up` (Anything specific you want help cleaning up?)
- Optional fields: `Who-handles-invoice-follow-up-today` (Who handles invoice follow-up today?), `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.