A body was found during a search for an American Airlines flight attendant who disappeared during a layover in Medellin, Colombia, the city's mayor said Friday.Eric Fernando Gutierrez Molina, 32, a U.S. citizen and North Texas resident, went missing Saturday evening after a night out with a fellow flight attendant. The two flight attendants visited a bar in Medellin's El Poblado neighborhood, popular with international tourists, according to family and friends as well as Colombian officials.Gutierrez Molina was set to work on a return flight from Medellín to Miami on Sunday. His longtime partner, Ernesto Carranza, told CBS News that he became worried when he wasn't able to reach him on Sunday morning. An undated photo of Eric Fernado Gutierrez Molina.…