Task: Question Decomposition
Input (English): question: what nonstop flights are available from oakland to philadelphia arriving between 5 and 6pm 
Output (English): #1 return flights 
#2 return #1 that  are nonstop 
#3 return #2 from  oakland 
#4 return #3 to philadelphia 
#5 return #4 arriving between 5 and  6pm