show me all the flights between dallas fort worth and either san francisco or oakland that depart between 5 and 7pm 
return flights ;return #1 between  dallas fort worth and  san francisco ;return #1 between  dallas fort worth and  oakland ;return #2 , #3 ;return #4 that  depart between  5 and  7pm
['select', 'filter', 'filter', 'union', 'filter']