design question - book halls per hour/date

Hi All,

I am doing a project in which a user can add his own halls and manage booking for general users.

so you have owner and normal user in which he become owner if he adds his own hall.

i am stuck how can i implement a process of managing a schedule .. i mean how user provision free/busy, approve requests .. set prices per hour. etc..

Also how user can see available dates.. hours.. and book .. get confirmation via email etc..

any advice how to design and which help stuff I can use for viewing and managing this kind of calendar..