http://www.fmeextensions.com/magento-bookings-reservations-3

Booking and reservation module is the perfect Magento solution for hotel managers, hospital and clinic, travel agents, event organizers, and all those traffickers who bookable online products and services. You can configure and add bookable product items such as their buffer time, time slots and pricing customers can use customized booking option with the help of calendar. They have choice to select any member from staff during reservation or booking for services such as massage, therapy etc.