A union representing flight attendants for American Airlines Group said on Thursday that the latest round of talks with the carrier did not lead to an agreement this week.The Association of Professional Flight Attendants (APFA), which represents about 28,000 American Airlines flight attendants, said it has moved closer to a strike as the airline did not present a favorable agreement.The airline’s flight attendants, however, cannot walk off the job until the National Mediation Board (NMB) grants them permiss ...