what is the cheapest first class fare from cleveland to miami on us air on february twenty fourth
O O O B-cost_relative B-class_type I-class_type O O B-fromloc.city_name O B-toloc.city_name O B-airline_name I-airline_name O B-depart_date.month_name B-depart_date.day_number I-depart_date.day_number