Question 4: [11 points: 6,5] es date 1) Describe a scenario associated with reservation of a seat, and construct a sequence diagram Sequence for this scenario.. Seats can be reserved by passengers on the web site of the bus company. Passenger lists all scheduled busses from city - to city on "date". The system displays all the seats with their status. Passenger chooses seat number, which happens to be free. He completes the reservation by entering his contact information. We assume passenger had already logged on to the system prior to this scenario and each operation show up in the reservation side.. 2) Draw a state diagram for describing the details of the Seat object of the above system The Passenger has the option to directly pay for the seat through the website. In that case, the seat cannot be cancelled (neither by the Passenger nor by the bus company). If the Passenger has not paid for the seat, the bus company can cancel the seat if the Passenger does not show up one hour before the trip. When the reservation is cancelled, the seat will become free and can be sold to another Passenger. Both the Passenger and the company staff must authenticate themselves for performing operations with the system Good Luck