i need to fly from boston to baltimore please give me the times of your flights in the morning before 8 o'clock
O O O O O B-fromloc.city_name O B-toloc.city_name O O O O B-flight_time I-flight_time I-flight_time I-flight_time O O B-depart_time.period_of_day B-depart_time.time_relative B-depart_time.time I-depart_time.time