Assignment: Implement a Flight Booking System

Objective:

You will develop parts of a simple Flight Booking System based on the Java skeleton created in the

previous assignment. This system will involve persisting data using object serialization, and

implementing search functionality that works against persisted data. It also involves creating and

using a custom exception type.

Tasks:

$1.$ Add flights:

Implement a method to add new flights. Make it possible to enter the arrival and

departure times using a time zone.

$2.$ Search Functionality:

Implement a search method to find flights based on departure and destination. It

should be possible to search for only departures, only destinations and a combination

of departure and destination. Seats and prices don't need to be displayed at this

moment $($but feel free to think about how to best present this information$).$

$3.$ Data Persistence:

Implement object serialization to save and load the state of all Flights. Load all flights

when starting the application and save them all before quitting.

$4.$ Exception Handling:

Handle exceptions that may occur during file operations.

Implement a custom exception called FlightBookingException and throw it whenever a

new flight is added using an already existing flight number. This exception should not

crash the application.

$5.$ User Interface:

Create a simple text$-$based interface that allows users to interact with the system.

Include options to add flights, passengers, bookings, and to search for flights. $($Note that

you only have to implement the functionality for add flights and search for flights$).$

Create a Main class and use it for all user interaction $($input and output$).$ That is$,$ there

should be no print statements but in the Main class.

Expected Output:

$1.$ Add Flight

$2.$ Add Passenger

$3.$ Book a Flight

$4.$ Search Flights

$5.$ View Bookings

$6.$ Save and Exit

Choose an option: $1$

Enter Flight Number: SO$123$

Enter Departure City: Stockholm

Enter Destination City: Malm$$

Enter Departure Time $($yyyy$-$MM$-$dd HH:mm $+/-$HH:mm$)$: $2023-12-1208$:$00+02$:$00$

Enter Arrival Time $($yyyy$-$MM$-$dd HH:mm $+/-$HH:mm$)$: $2023-12-1210$:$00+02$:$00$

Flight