find me the earliest boston departure for atlanta and the lastest return trip from atlanta so that i can be in atlanta the longest amount of time but return to boston the same day
O O O B-flight_mod B-fromloc.city_name O O B-toloc.city_name O O B-flight_mod O O O B-fromloc.city_name O O O O O O B-toloc.city_name O O O O O O O O B-toloc.city_name O O B-return_date.date_relative