Booking data base for ski chalets

We have a detailed spec for the job but would like to draw up a short list of programers first. we require full copyright and ownership of the work Are looking for a long term on going relationship to continually improve the sytem after the first version is compleete and paid for In brief the system will record the names of ski groups, which rooms in the ski chalet they are booked in to, detail the invoice, record ski extras such as requirement for ski hire, ski lessons and ski passes, email the guests details such as invoice, booking confirmation and keep a history of guest names. The system to be installed on a server so it can be updated over the internet. Can people only respond who have built data base systems and demenstrate them. looking for a high quality job. Looking for demonstration of type of work you have done and i will then post detailed spec to suitable bidders