Information system for videos and games

Information system for videos and game for rent
This is what i am asked for:

A videos/games renting company requires an information system to hold and manipulate information on videos and games available for renting, and on customers.

The system should be able to perform a number of operations including holding the name of every item (videos and games), allocating a numeric code (number) for every item, working out the cost for renting out, the availability, returning the total number on loans etc. The system also should be able to add and delete items, to loan items and mark the items that are on loan. Other things like distinguishing between old and new releases could be included.

On the customers side, the system should create an account for every customer, store the name and address of every customer, the names of items on loan, the amount to be paid, date of returning the item and any penalty charges. It should also add and delete customers and return the total number of customers, and to be able to deal with special classes such as senior citizens for charging purposes

the task is to design and implement an object-oriented model of the system. It is up to you how to go along the task, however, your program should illustrate some of the major object oriented concepts such as inheritance, polymorphism etc.

The program should provide some simple interface menu to deal with videos, games and customers.