Automatic Ticket Grabber (no credit Card)

We are looking for a programmer to develop a system/robot for us to make reservations.
The target site is
https://tickets.museivaticani.va/home

and you need to make a reservation for a specific museum (list of 4 items) and for a specific date
Therefore, through a BackEnd, the system must allow the admin to schedule a purchase (via cron) considering this information that the site gives:
– museum type
– date hour
– number of participants
When that date and time arrives, the system will make the reservation

The reservation is not done with credit card but it’s taken from a pre-paid plafond.

Regards