What is the first name and last name employee helps the customer with first name Leonie?
return employees ;return customers #1 helps ;return first  names of #2 ;return #1 where #3 is  Leonie ;return first  name of #4 ;return last name of #4 ;return #5 ,  #6
['select', 'project', 'project', 'comparative', 'project', 'project', 'union']