57110 web based appointment system

This is a booking system for a car service workshop. Clients will go online choose their workshop and see available dates and times. They then can book an available time. Both the client and workshop will be notified by email. The tricky part is different workshop will offer different car services' package with both different durations and prices depending on car model. So each workshop must have their own control panel to enter their services, durations, avaible days and times, and a manual appointment setter if someone calls them up. Also each workshop must have an area where they can enter in total sales of products such as oil filter, engine oil, gasket etc. All these products must be inventoried in another table of the DB. Wesbite operator will recieve a percentage of their product sales so this must be tracked. There must also be an admin area that can access all the workshop and generate reports such as sales and schedules. This project must be done in php/mysql. We will be offering many other programming jobs in the future and are looking to form a relationship with a good programmer.