question: what are the fares for flights serving a meal from boston to pittsburgh before noon on thursday 
#1 return flights 
#2 return #1 from  boston 
#3 return #2 to pittsburgh 
#4 return #3 before noon 
#5 return #4 on  thursday 
#6 return #5 that  serve a meal 
#7 return fares for #6