Find the names of customers who ordered both products Latte and Americano.
return customers ;return products ordered of #1 ;return #1 where #2 is Latte ;return #1 where #2 is Americano ;return #1 in  both #3 and  #4 ;return names of #5
['select', 'project', 'comparative', 'comparative', 'intersection', 'project']