Create custom functionality product reservation form

[Reserve product] -> Modal: To select store where product is available from the list -> Submit: (email/phone)-> Reserve()

Reserve() -> send Email to selected store with two options (to Confirm/Deny)-> Confirmed or Denied(send Email/SMS) with defined content;

No need to store reservations in MySQL;
We have SMS sending API in use already so the same class could be adapted.
Email sending could be via Prestashop mail sending class or phpmailer;