AVAILABILITY CONTROLS
This approach is used primarily by the airlines for seat allocation. It basically sets limits on seats in each rate category. The same approach is possible for hotel room. Full-price rooms are always available, but discounted rooms are sold until they run out. For example: If the full-price rate is $225, some rooms would be available at $150, some at $175, and still others at $200. Once the $175 (20 rooms) were booked, the only available prices would be $150, $200, and $225. The less expensive rooms are those that are normally difficult to sell: those across the hall from the elevators, the farthest from elevators, those near the access/egress doors, etc. This method attempts to maximize revenue based on room capacity and demand