API related work for Bus Ticket Reservation Website

We are presently having a bus ticket reservation software for multiple bus operators. But has to fix some issues as below. I can provide you the existing software cpanel to under stand what I need to the right [login to view URL] planning to share this API inventory to individual bus operators & to ticket booking web portals... 1. AJAX page to display seat map in the same page. 2. Change fare on any selected date for any or all services as and when needed by the travels owner. This can be done by selecting a date & service and change fare. In this case we need to insert this value as FLAG. When user checks for fare, system checks whether there is any flag for that service on that day. If yes it displays that value if not it will take value from the main database. 3. NEXT & PREVIOUS day search results i.e service availability links should be there. 4. Reports for Detailed & summary transactions for agents, employees, online & API users. Their booking details & financial details. 5. Service migration i.e merging of more services to single service in the same route. 6. Managing seat layout for sleeper & seat class properly from back end. 7. Write API this application to integrate this to individual websites of the travel owners & to share our full inventory with other ticket booking websites. 8. API must have option to create an API account & active & deactivate it. Please reply me ASAP & bid as this project is very urgent for me to complete as it is already 99% completed. Thank you. Anil.