PBO-C 5 : SupportSystem()

import java.util.*;

public class SupportSystem
{
    private InputReader reader;
    private Responder responder;

    public SupportSystem()
    {
        reader = new InputReader();
        responder = new Responder();
    }

    public void start()
    {
        boolean finished = false;
        printWelcome();

        while(!finished)
        {
            HashSet<String> input = reader.getInput();

            if(input.contains("bye"))
            {
                finished = true;
            }
            else
            {
                String response = responder.generateResponse(input);
                System.out.println(response);
            }
        }

        printGoodbye();
    }

    private void printWelcome()
    {
        System.out.println("Welcome to Our Technical Support System");
        System.out.println("How can i help you?");
        System.out.println("You can type 'bye' to exit");
    }

    private void printGoodbye()
    {
        System.out.println("Nice to talk with you, Have a good day!!");
    }
}