Hi,
I will be using PHP 5.4 or later with MYSQL server for data storage. I got few questions for you on this project.
1) When u hosting this site, I believe that you will be buying some third part server space, so It will help out if you can let us know what all they support you with. Most third part hosting sites do give MYSQL at max.
2) If this project needs to be completed in 15 days, you should have all the requirements handy so it would make things easy to code in efficient way.
3) I believe you will also be looking to have some admin side pages that would make your life easy to edit rates and timings just for admin , and once updated should reflect to user real time.