booking module to edirectory

i need booking module to be added to edirectory script.. my vision is to build something like [login to view URL] using edirectory for vacation rentals.. the seller and the administrator should be able to edit the availability calendar..and the visitors shall see the calendar with available dates and proceed to book that property for either full day or half day. the calendar shall display available dates of the property for 12 months from that date. important.. the search shall have availability calendar including from and to date and will be the main thing in it. i shall provide the edirectory script.. if you have done edirectory work then u will be preferred over others.. show samples.. i need further more important modifications to the edirectory script.. u need to create MySql table and make it work faster using ajax...