user: Question: Who directed "People Who Use People"?
Columns: ['No. in series', 'Title', 'Directed by', 'Written by', 'Original air date', 'Prod. code', 'Viewers (millions)']
Types: ['real', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: [2.0, '"Miley Get Your Gum"', 'David Kendall', 'Michael Poryes', 'March31,2006', 103.0, '4.0']
SQL:

assistant: SELECT "Directed by" FROM "Table" WHERE "Title" = '"People Who Use People"';