joomla online booking

I need a joomla component and perhaps module made that will allow me to add online booking to my spa site. The site is [login to view URL] I need something that I can have a client browse services, click a service or multiple services, get an online calendar screen, make an appointment that blocks out the calendar from further appointment use. I need a back end that allows customization of time slots per service. For example, If a person wants a facial and clicks the facial button, it automatically adds the time for that facial to the booking and allows a customer to then choose from dates and times that are available for that service. I am currently using "room booker" but it does not allow me to turn off certain days, the time slots are inflexible, and the names of the booking options are fixed. Of course I need email notifications when a customer has booked a time, and a back end visual calendar of booked times and available times is a real perk. I will gladly pay $300 for this script delivered as a "com.zip" ready to install. Cheers -s