I want a xml api travel integration

Project Description:

1) A complete wordpress theme for online travel booking management.

2) Some PHP pages with the same wordpress theme template (homepage, booking engine for multiple products (flights, hotel, etc.), booking path pages, etc.). No CMS, no database connection and with a XML API connection to only one travel supplier.

I'd like to:

1) Integrate wordpress theme with PHP pages (booking module in homepage, search result pages and booking path pages): front end, back end administration and database connection.

2) Adding more 5-6 XML API connections to other travel suppliers (integration code prepared by travel suppliers (for example booking.com, expedia, etc.))

3) changing results pages (hotel, flights, etc.) to publish only the best price for any product (hotel, cruise, etc.)

4) Adding payment gateway integration in a already existing page.

Skills required are CSS, HTML, PHP, XML , Wordpress