Codez un logiciel

Hello, I have we travel website and everything is done on site except flights. We have affiliate API already integrated. Instead of API showing flights, dates and prices and redirect to original for payment, I want that when visitors select the flight, to be no redirection.... they should be able to pay directly on our site and we send them the ticket.. i just need a simple solution for that I need this today, must finish today (Urgent work)