i want to fly from detroit to st. petersburg on northwest airlines and leave around 9am tell me what aircraft are used by this flight and tell me the flight number 
return flight ;return #1 from detroit ;return #2 to  st. petersburg ;return #3 on northwest airlines ;return #4 that  leave around 9am ;return aircraft used by #5 ;return flight number of  of #5 ;return #5 ,  #6 ,   #7
['select', 'filter', 'filter', 'filter', 'filter', 'project', 'aggregate', 'union']