API Integration with Via.com website

I have a Travel Agent website which sell Tour Packages around Indonesia, this website is based on Wordpress. And I would like to create API integration for my website with [login to view URL] website. [login to view URL] is an OTA (Online Travel Agent) which based in India. Please note that I would only need you to develop the API integration for Flight Ticket, Train, and Hotel only. Not the whole API like Event or Tours are not needed. So it will be starting from search event where people will search their flight, train ticket or Hotel Reservation, then show up the search result detail, people select the flight or train they want, and go to checkout where they will enter their detail for the ticket and last is the payment. All transaction will be done thru [login to view URL] website since they have their own Online Payment Gateway. So we dont have to build our own Payment Gateway. We dont need to built special dashboard with login for all of our users. We dont have to store any information at our end. All data will be taken thru the API system at [login to view URL] website. I would be more prefer for someone who has build API for [login to view URL] website. So that you understand well the API from [login to view URL] end point. Looking forward for your bid...