Calendars for certain members

Hi,
Basically I am currently looking into creating a website but I need a calendar for certain people…. For example: I am looking for a guitar teacher, I come across a website where it displays 100’s in my area I click on their profile/calendar and it shows me when they are available. I can then either call them or book it right there and pay via paypal.

Any help would be great!! 🙂