i'm going to leave philadelphia and i want to go to san francisco and i want to fly first class american and i want a stop in dallas can you please tell me what type of aircraft you will be flying 
return flights ;return #1 from philadelphia ;return #2 to  san francisco ;return #3 that  are first class ;return #4 on american ;return #5 that  have a stop in dallas ;return aircraft of #6 ;return type of #7
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