Interesting, I like it. What you are saying is basically a more refined idea about apart from the use case of picking the best time and location for a dinner with your friends, this functionality can be used by schools to schedule a class depending upon the user preferences(if they are interested in the design course over at the arts department) and since the app will also have the knowledge of the rooms and halls it can recommend them better scheduling options.

By the way, if you dont mind me asking. Are you a Design major or CS major?