what is the cheapest first class fare from cleveland to miami on us air on february twenty fourth 
return flights ;return #1 in  first class ;return #2 from  cleveland ;return #3 to miami ;return #4 on us air ;return #5 on february twenty fourth ;return cheapest of #6
['select', 'filter', 'filter', 'filter', 'filter', 'filter', 'project']