Design an application that assigns seats on an airplane. the airplane has 20 seats in first class (five rows of 4 seats each, separated by an aisle) and 90 seats in economy class (15 rows of 6 seats each, separated by an aisle). your app should take four commands: add passengers, show seating, create ticket and quit. when passengers are added, ask for the passenger’s name, the class (first or economy), the number of passengers traveling together (1 to 2 in first class, 1 to 3 in economy), and the seating preferences (aisle or window in first class, center or window in economy). try to find a match and assign seats. then create tickets for the passenger. the passenger tickets should be stored in an output file so they can be retrieved and printed at the airport. if no match exists, display a message. follow the design process that is described in the presentation for this topic.