11.   The big carriers are also trying to regain their grip on retail sales.

12.   The carrier is trying to set itself apart from competitors that cut those amenities.

13.   The carrier is trying to compete with Southwest Airlines Co. and other budget airlines in Florida.

14.   The goal is to increase profits, but different carriers are trying far different routes to that end.

15.   ValuJet sued, claiming the two carriers were trying to stifle competition.

16.   While cutting costs, the Swiss national carrier also tries to raise market share.

17.   But easyJet immediately expressed concerns that the new British Airways carrier might try to wipe out competitors through cutthroat pricing and said it was considering a legal challenge.

18.   Complaints about the American airline industry are skyrocketing this year even as air carriers try to live up to their promise to improve customer service, federal investigators say.

19.   Southwest Airlines touched off a new round of fare cuts Thursday as carriers try to combat sluggish travel demand this summer and fall.

20.   The carrier has been trying since January to persuade Trinidad-based BWIA International Airways to invest in it.