It is a well documented fact that plane tickets are rare to get hold of during the holiday season and unless one books them well in advance, they are bound to be in trouble. I had tried all my resources and had even searched the net but to no avail. As mentioned above, I had revealed my woes to this pretty friend of mine. There was no doubt in my mind that she would not be able to help me out. You cannot believe my surprise when she told me that she was an airhostess and that the airliner she worked fro had special cheap flights for offer special during the winter season. Before parting for the day, she promised me that she would help me secure the tickets. She also told me that I could book the same through the net.

http://www.flightscheaptickets.com/

Layers below it Implements some functionality some service. At the ticketing layer and below, airline-counter-to-airline-counter transfer of a person is accomplished. At the baggage layer and below, baggage-check-to-baggage-claim transfer of a person and bags is accomplished. Note that the baggage layer provides this service only to an already-ticketed person. At the gate layer, departure-gate-to-arrival-gate transfer of a person and bags is accomplished. At the takeoff/landing layer, runway-to- runway transfer of people and their bags is accomplished. Each layer provides its service by (1) performing certain actions within that layer (for example, at the gate layer, loading and unloading people from an airplane) and by (2) using the services of the layer directly below it (for example, in the gate layer, using the runway-to- runway passenger transfer service of the takeoff/landing layer).
A layered architecture allows u to discuss a well-defined, specific part of a large and complex system. This simplification itself is of considerable value by providing modularity, making it much easier to change the implementation of the service provided by the layer. As long as the layer provides the same service to the layer above it, and uses the same services from the layer below it, the remainder of the system remains unchanged when a layer’s implementation is changed. (Note that changing the implementation of a service is very different from changing the service itself!) For example, if the gate functions were changed (for instance, to have people board and disembark by height), the remainder of the airline system would remain unchanged since the gate layer still provides the same function (loading and unloading people); it simply implements that function in a different manner after the change. For large and complex systems that are constantly being updated, the ability to change the implementation of a service without affecting other components of the system is another important advantage of layering.