Observer Pattern in .NET

using System;

namespace ObserverPattern
{
	/// <summary>
	/// Summary description for Library.
	/// </summary>
	public class NationalTravels
	{

		public void UpdateBangaloreAirlinesRout(object Traveller)
		{
			if( Traveller is BangaloreAirlines)
			{
				AddRoutforBangaloreAirlines((BangaloreAirlines)Traveller);

			}

		}

		private void AddRoutforBangaloreAirlines(BangaloreAirlines traveller)
		{
			//Code for adding the new rout to NationalTravel's Travel database.
			Console.WriteLine("new rout No. " +  traveller.TravelRout  + " Added Sucessfully to National Travel's Database");
		}
		
	}
}