TAMPA — Carole Hopson’s alarm went off at 5 a.m. She rose from her airport hotel bed, showered and made some coffee in the room. Then it was time to go over her flight plan. There would be some turbulence on the 9 a.m. short haul to Newark — nothing severe, but she’d have to tell the flight crew to stay seated a little longer after takeoff and before landing. Hopson put on her uniform: a crisp white dress shirt and navy Brooks Brothers suit made custom for United Airlines.