conference center reservation

I need to design small program for conference center as reservation basic system for front desk. 20 meeting rooms in the center Rooms from 1-10 small meeting room price= $180 Rooms from 11-17 medium= $250 Rooms from 18-20 large= $400 Functions: 1- Make reservation by: 1- Name, 2- Phone number, 3- Date "Ex: from/to",4-Length of reservation "Ex: one day OR 2 weeks", and 5- Meeting room type such as small, medium 2- Check the availability of the center. 3- Check-in 4- Check-out 5- print invoice with the guest information+ type of room+ length of reservation+ total Requirement: 1- GUI 2- MySQL database