Consider the following scenario for a passenger booking a train ticket: · The applicant would check the available trains on a specific date using the user interface. · The system would search for the...

Consider the following scenario for a passenger booking a train ticket: · The applicant would check the available trains on a specific date using the user interface. · The system would search for the available trains on that date and present them. · The applicant would select one of the trains routes and time of departure. · The applicant would provide payment using a credit card. · The system would update the number of passengers of that train. · The system would associate the passenger details with the ticket number. a- Draw a sequence diagram for the above scenario with a minimum of 4 objects and 6 message calls b- Draw another (conditional) sequence diagram for implementing the below exception: If the passenger has a loyalty membership, he should benefit from a discount.