In the calendar image at top of the demo site, why would you not include the month? It looks as though this is not included while using the script. Show what you actually see in the demo. I still have no idea how to work this script.
First you need to state the intended use of the script. It needs to be at front so that visitors may easily qualify it use. I am specifically looking for a booking script which allows the admin to schedule events. This is not apparent on your product nor demo page. Because it was so difficult to understand, I figured I would just move on. You have many hours of programming this script but then it fail to be easily be understood. Presentation is everything and that is what is lacking, clear understanding of its features, the demo and its intended use. If you have to explain what the demo is about, the demo is a failure. Redo the demo to get better results. Have someone who knows nothing about your script to go to your site and see if they understand what online booking is about. Have them either on Skype or on location. Track their reactions.