Task: Question Decomposition
Input (English): question: is there a flight between washington dc and san francisco on us air at 8am 
Output (English): #1 return flights 
#2 return #1 between washington dc 
#3 return #2 and  san francisco 
#4 return #3 on  us air 
#5 return #4 at 8am 
#6 return are there  any  #5