Booking Systems, an ecommerce for Selling hours

A client would like a ecommerce for selling HOURS, a Booking Systems, let me try to explain, Think of a Hairdresser group that will have each of their professionals as a Product, when you open the Product Details you will see an agenda with the AVALIABLE days and hours for this Product, where you are able choose to hire him for instance "the next day from 2pm to 5pm", the system them will give you the cost for this. Sure each day and period have its prices and a professional could sell not only one kind of service. example: Mr Pink is a hairdresser and makeup artist, from monday to friday Mr Pink hour costs $X, on saturdays it costs $Y, you can hire him for hairdresser services only or for makeup. I would like this as a Drupal or WP module or some simple shopping cart