ASP Classic Online Booking System

I need an experienced and reliable ASP/VBScript developer to build an online availability checker and bookings system for my client who runs two large holiday parks. The system *must* be accessible by and work together with an existing Content Management System which I have already designed and built in ASP. The site uses a MySQL database and is hosted on a Windows server. The bookings system should allow customers to make an initial booking enquiry by selecting dates from a pop-up calendar with their intended length of visit and their basic contact information. Subject to availability, this will then take the customer to an online payment gateway (a WorldPay account has been set-up for this purpose). This should then return a receipt to the customer and the holiday park admin staff for their records. A booking reference number is all that is required to match up the booking with the payment reference. The hire prices vary according to the size and type of holiday home (there are five types at one site and six at a different site). The price also fluctuates depending on the week of the year. Peak season rates are noticeable higher. Therefore the client needs the ability to adjust prices for each holiday home for each week of the year. It must be possible to book a holiday home for 1 week, 2 week or 3 week durations and the start and end dates should run from Friday to Friday of every week throughout the year. In addition to this, the holiday park also runs midweek and weekend holiday packages where it is possible to book a holiday from Monday to Friday (4 nights) and Friday to Monday (3 nights). There is a festive season offer which covers Christmas and New Year and again, the prices must be adjustable. The bookings database should show: customer name and contact details, booking reference, holiday home type, length of stay, holiday start and end dates and final price field. If the chosen holiday home is unavailable, it would be desirable for the system to recommend a list of suitable alternative homes that are available.