what first class airplane goes from philadelphia to san francisco and stops in dallas in the afternoon on monday 
return airplanes ;return #1 that  go from  philadelphia ;return #2 to san francisco ;return #3 that  stops in dallas ;return #4 on  monday ;return #5 in the afternoon ;return #6 that  is  first class
['select', 'filter', 'filter', 'filter', 'filter', 'filter', 'filter']