///<summary>
///Method that creates a new WPF flight window.
///</summary>
private void OpenFlightWindow(String flightNumber)
{
FlightWindow fw = new FlightWindow(flightNumber);
fw.Show();
//Subscribe to event for the specific flight.
SubscribeToFlightEvent(fw);
}
///<summary>
///Method that add subscriptions for the class.
///</summary>
private void SubscribeToFlightEvent(FlightWindow fw)
{
fw.Started += OnStartedEventReception;
fw.Landed += OnLandedEventReception;
fw.ChangedRoute += OnChangedDirectionEventReception;
}