Original sentence: " The growth of low-cost carriers such as Southwest Airlines has brought more point-to-point service back into the United States air transport system, and contributed to the development of a wider range of aircraft types that are better adaptable to markets of varying sizes
Edited sentence: " The growth of low-cost carriers such as Southwest Airlines and Pacific Southwest Airlines has brought more point-to-point service back into the United States air transport system, and contributed to the development of a wider range of aircraft types that are better adaptable to markets of varying sizes