Sofia.net

// To run first create a new project with:
//     dotnet new console
// Edit the Program.cs file adding a call to Question.Results()
// Then run with
//     dotnet run
public class Question
{
    public static void Results()
    {
        var responses = new List<Object>();
        responses.Add(new DuffelAirResponse("JFK", "LGW", "18:00", "17:50", "432GBP"));
        responses.Add(new VirginResponse("JFK/LGW", "18:00", "17:50", "12300", "GBP"));
        responses.Add(new VirginResponse("JFK/LGW", "15:00", "19:30", "10900", "GBP"));
        responses.Add(new AAResponse("jfk", "lgw", "2020-07-23 09:01:20 +0000", "2020-07-23 12:07:53 +0000", new Price("315.50", "USD")));
        responses.Add(new BAResponse("jfk", "lgw", "2020-07-23 09:01:20 +0000", "542", new Price("425.50", "USD")));
        responses.ForEach((response)=>Console.WriteLine(string.Join(", ",response)));
    }
}

public class AAResponse
{
    private String originCode;
    private String destinationCode;
    private String departureDateTime;
    private String arrivalDateTime;
    private Price price;
    public AAResponse(String originCode, String destinationCode, String departureDateTime, String arrivalDateTime, Price price)
    {
        this.originCode = originCode;
        this.destinationCode = destinationCode;
        this.departureDateTime = departureDateTime;
        this.arrivalDateTime = arrivalDateTime;
        this.price = price;
    }
    public override String ToString()
    {
        return $"AA {this.originCode} {this.destinationCode} {this.departureDateTime} {this.arrivalDateTime} {this.price}";
    }
}

public class BAResponse
{
    private String originCode;
    private String destinationCode;
    private String takeOffAt;
    private String duration;
    private Price price;
    public BAResponse(String originCode, String destinationCode, String takeOffAt, String duration, Price price)
    {
        this.originCode = originCode;
        this.destinationCode = destinationCode;
        this.takeOffAt = takeOffAt;
        this.duration = duration;
        this.price = price;
    }
    public override String ToString()
    {
        return $"BA {this.originCode} {this.destinationCode} {this.takeOffAt} {this.duration} {this.price}";
    }
}

public class DuffelAirResponse
{
    private String origin;
    private String destination;
    private String departureTime;
    private String arrivalTime;
    private String price;
    public DuffelAirResponse(String origin, String destination, String departureTime, String arrivalTime, String price)
    {
        this.origin = origin;
        this.destination = destination;
        this.departureTime = departureTime;
        this.arrivalTime = arrivalTime;
        this.price = price;
    }
    public override String ToString()
    {
        return $"Duffel Air {this.origin} {this.destination} {this.departureTime} {this.arrivalTime} {this.price}";
    }
}

public class VirginResponse
{
    private String flights;
    private String departureTime;
    private String arrivalTime;
    private String priceFractional;
    private String currencyCode;
    public VirginResponse(String flights, String departureTime, String arrivalTime, String priceFractional, String currencyCode)
    {
        this.flights = flights;
        this.departureTime = departureTime;
        this.arrivalTime = arrivalTime;
        this.priceFractional = priceFractional;
        this.currencyCode = currencyCode;
    }
    public override String ToString()
    {
        return $"Virgin {this.flights} {this.departureTime} {this.arrivalTime} {this.priceFractional} {this.currencyCode}";
    }
}

public class Price
{
    private String value;
    private String code;
    public Price(String value, String code)
    {
        this.value = value;
        this.code = code;
    }
    public override String ToString()
    {
        return $"{this.value} {this.code}";
    }
}