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sarafem and meridia ATLANTA, Nov. 25, 2013 /PRNewswire/ -- Corporate travel managers rated Delta Air Lines (NYSE: DAL) No. 1 in this year's Business Travel News Annual Airline Survey for the third year in a row. The airline ranked first among all carriers in nine of 10 categories scoring particularly high in key areas of the survey including: Value of Relationships with Account Managers and Sales Representatives; Quality of Airline Communications; and Networks, Airline Partnerships and Frequencies.