i would like a nonstop flight between pittsburgh and philadelphia leaving in the afternoon and arriving in the vicinity of 5pm 
return flights ;return #1 that  is  nonstop ;return #2 from pittsburgh ;return #3 to  philadelphia ;return #4 leaving in the  afternoon ;return #5 arriving in the  vicinity of 5pm
['select', 'filter', 'filter', 'filter', 'filter', 'filter']