question: early morning flights between cincinnati and tampa 
#1 return flights 
#2 return #1 which are  in early morning 
#3 return #2 from  cincinnati 
#4 return #3 to tampa 
#5 return #2 from  tampa 
#6 return #5 to cincinnati 
#7 return #3 ,  #4 ,   #5 , #6