CoenAir is an airline company that offers domestic and international flights. The company has many flights. A flight is identified by a flight identifier $($string$),$ a departure city $($string$),$ an arrival city $($string$),$ a departure time $($an object of class Time see in the class$),$ an arrival time $($object of class Time$)$ and the expected duration of the flight in terms of hours $($int$).$ Create a driver to test the functionalities of the class Flight.

Q$1.[20$ points$]$ Create the class Flight. Include all the attributes, one or multiple constructors, a copy constructor, a destructor, constant member functions, and accessing functions. Note that departure and arrival Time objects must be created using dynamic allocation, i$.$e$.,$ these should be declared as pointers to class Time. Test the class Flight.

Q$2.[30$ points$]$ We want to create a class called Airline to represent the CoenAir information. Airline contains the name of the airline company, the address, and a telephone number, an array of all flight objects of question Q$1.$ The class Airline should have the following functionalities including:

Add a flight

Remove a flight

List all flights

List all flights departing from a given city

List all flights arriving to a certain city

List all flights departing from and arriving to specific cities

Return the number of flights

Q$3.[20$ points$]$ Create the class Passenger to represent the passengers of CoenAir. A passenger has an id $($string$),$ a name $($string$),$ an address $($string$),$ a telephone number $($string$).$ Create all the necessary functions. Test the class Passenger.

Q$4.[30$ points$]$ We want to book passengers on flights. To this end, we need create a new class called Booking. A passenger can have many bookings. A booking is for one flight and one flight only. A flight has many bookings. To implement this, we need to modify the class Flight to include

an array of objects of the Booking class. We also need to modify the class Passenger to include an array of objects of Bookings. Finally, we need to create the Booking class, which contains an object Passenger, an object Flight, and a seat number $($string$).$ Submit the new classes Airline, Flight, Passenger, and Booking. Test the entire system.