Task: Question Decomposition
Input (English): question: show me all fares between philadelphia and san francisco that are less than 200 dollars one way 
Output (English): #1 return flights 
#2 return #1 between philadelphia 
#3 return #2 and san francisco 
#4 return fares of #3 
#5 return #4 that  are lower than 200 dollars 
#6 return #5 that  are one way