Task: Question Generation
Input (English): #1 return flights 
#2 return #1 from  charlotte 
#3 return #2 to las vegas 
#4 return #3 that  stops in st. louis 
#5 return #4 that  has  dinner on  the flight
Output (English): i'm looking for a flight from charlotte to las vegas that stops in st. louis hopefully a dinner flight how can i find that out