Task: Question Generation
Input (English): #1 return fly 
#2 return #1 from  san francisco 
#3 return #2 to   boston 
#4 return #3 with a stopover in dallas fort worth 
#5 return #4 on  delta airlines
Output (English): i'd like to fly from san francisco to boston with a stopover in dallas fort worth and i want to fly on delta airlines