Open Connectivity for Tours, Activities, and Attractions Booking Reservation

Reserving availability when making a booking. The steps to make a reservation are: 1. **Check Availability**: Check the availability on the [/availability](docs/octo/branches/main/5b08f5f75e75d-availability-check) endpoint to retrieve an `availabilityId` 2. **Booking Reservation** (this step): Create a booking that reserves the availability while you collect payment and contact information from the customer. The booking will remain with status `ON_HOLD` until the booking is confirmed or the ...