Создание веб-сайта

Hello! For my web-site I need a booking system. Don't need UI, it will be done by our specialists. Web-site linking together a lot of business with the same service. The service has a small list of variations that has different time. The time step has to be 30 minutes for 24 hours. There are main services and additional services. User come to the site, go to booking, choose services (to count the time), after choose time that is comfortable to him and script shows him the list of places he can get the service. On other side we have admin panel of service place where the outer has to have calendar, can see the bookings (time) and can add some time which he want to block (off-line clients). The other way, user go to the service place page, where he can see the calendar with free and taken time and can choose the time is good for him. All this has to work with Ajax and refresh (ajax data) every 15 seconds for the user to see the taken and free time while booking. Please begin your proposal with the word "booking service" for me to know that you've read this. This can be done with JS or PHP. Everything except calendar (personal pages, admin pages) we will do by ourself. Your task is to make calendar system and bring it to the UI without any design, just to make it work. We need: - Clear, structured code with comments and explanations - is must - Booking system with will work with Ajax and can be delivered on front-end - Good understanding of what we need and making our vision alive in the code - Work for implementation after finishing. We're ok with giving you enough time to work, and we have a small budget as well. Please, if you have some examples of such a systems made by you - give us a link or working demo. You can see the examples of how it has to work on http://мойка.онлайн.