Compare prices site PHP,MYSQL, AJAX

The website is not at all complicated, I want a website that compares prices on flights, hotels and car rentals. This is kind of third-party. It performs the search on my page, which in turn are looking at other pages and collects the cheapest flight / hotel / rental car, and presented on the website. Examples of sites <[login to view URL]> [login to view URL] The page will also have a small community with - discussion? forums like this site? (<[login to view URL]>) - Travel albums, user can put photos? ? <[login to view URL]> - Comments user should comments the photos? <[login to view URL]>