car parking booking engine

Hi, Need an engine that allows the user to book car parking space. Input date and time - arrive input date and time - leaving find car park space available register (keep registration details - for next time return with login) Book Space Integrate with Relax payment gateway Generate email of booking for the user and notify admin new booking (turn on and off notification to admin from admin control panel) - Set amount of spaces available in the admin - keep inventory of spaces in admin - 200 spaces - Monday 190 spaces booked - 10 Remaining When no space remaining show 'Parking Unavailable' for the dates requested That's a general over view... should give you an Idea of what I'm looking for. Thanks -------