Appointment/Booking Sceduling System.

Hi, I am looking for the best PHP and wordpress developer to development me a appointment/scheduling booking system URGENTLY. I Want the system to have features or the important features like examples of: [login to view URL] [login to view URL] (WOULD BE GOOD TO HAVE LIKE THIS) The staff must be able to have there OWN logins and maintain there own calendars through wordpress backend or frontend and want a seperate database for customer appointments and not mix this with the wordpress database. i dont want this to be a full feature wordpress plugin a small flexible system which i can work in wordpress. if you need more info let me know or drop me a message. i am looking for have a working development whcih i need in a few days if possible or over weekend. urgently await