public void TicketInserted(Ticket ticket)
        {
            Console.WriteLine("ticket inserted {0}", ticket);
            TravelClientEventArgs travelEventArgs = new TravelClientEventArgs(TravelClientEvent.TicketAdded, ticket);

            OnTripEvent(travelEventArgs);
        }
 private void OnTripEvent(TravelClientEventArgs travelEventArgs)
 {
     if (UpdateEvent == null)
     {
         return;
     }
     UpdateEvent(this, travelEventArgs);
     Console.WriteLine("Update Event called");
 }