Prepare a flowchart: The Celebration Theatre is a small, independent theatre that puts on 12 plays per year. 30 days before the start of each calendar quarter, Celebration prepares advertising for the production in the upcoming quarter. They advertise on their web site, via e-mail to their season subsribers and via direct mail and brochures to others. Patrons can buy tickets for a single play: alternatively, they can subscribe to all three plays each quarter. Quarterly subscriptions offer a 25% discount from the proces of single tickets. Patrons may purchase tickets over the phone, at the box office or via the theatre's web site. All tickets are held at the box office where they can be picked up as early as one week prior to the performance. The theatre has an "open seating" plan, so patrons do not reserve a specific seat at any performance. If tickets are purchased in person at the box office, non-subcribers may pay with cash or a maor credit card: subcribers can pay with cash, major credit card or check. All tickets purchased over the phone or via the web site must be paid for with a major credit card. Celebration maintains an electronic database to track all ticket sales; paper tickets are printed at least ten day prior to a performance.Prepare a systems flowchart based on the case.