Thomas Waggoner, an information systems professor at the local university, is at the Will Call window at the Medallion Theatre, trying to pick up tickets he had reserved. However, due to an oversight which turns out to be rather frequent, his tickets were sold to another patron. Fortunately for Dr. Waggoner and his wife, who are celebrating their wedding anniversary, the box office manager finds two box seats which had not been claimed. In talking with the box office manager, Dr. Waggoner starts thinking that he could perhaps help the theatre avoid this type of problem in the future. His students could design and build a system to help keep track of ticket sales, and hopefully help the theatre become more efficient and improve customer satisfaction. Draw a Use Case Diagram for the proposed system in the case above, showing extend and include relationships

1. The primary purpose of a system is system development, analysis and design to avoid inappropriate and duplicate selling of theatre tickets.
2. The function requirements are development of a system which automatically reserves the ticket when a person books it and marks it appear booked for all the customers.
3. The customers can book the ticket through online system. The system then marks the ticket as unavailable for all the other customers until and unless the original customers cancels the ticket.

Explanation:

Dr. Waggoner had an issue with ticket booking as his booking was sold to another customer. This could lead him to a bad experience at theatre but since the box office manager assisted him with another available seats. This issue has been resolved with good faith but there can be problems in future where many customers can claim a single seat. To avoid this the theatre should introduce online booking system based on computer application which can be accessed by all the customers through website.