Build a Website

I want a air ticketing website with payment gateway integration and air ticketing vendors API integration. Special feature is a part payment facility where the client only pays the cancellation cost and service charge on the first instalment and the remaining amount a day before departure. Ticket will be issued on the website and not redirected to another website like for example [login to view URL] Option to manage the booking (pre-pone or post-pone, meal selection etc). Automated mailers for payment reminders. Automated invoices and vouchers Offline - online integration of ticket issuance in special cases Offline - online integration of payments (Payment made to air ticketing vendor is offline) Feature showing cheapest flights from a particular city on a particular date to anywhere in a list view A very well defined user experience from the time on the site to issuance of ticket Website should as per security norms of the www Website should be according to privacy norms of the www I like certain features in the following websites which will be discussed later, just a have look at the websites: [login to view URL] [login to view URL] [login to view URL] [login to view URL] Check these sites and reply with which site and what functions you like the best and why.