user: Question: Who directed the episode that aired November 21, 2003?
Columns: ['Series #', 'Title', 'Directed by', 'Written by', 'Original air date', 'Production code']
Types: ['real', 'text', 'text', 'text', 'text', 'real']
Sample row: [1.0, '"Pilot"', 'Jack Bender & James Hayman', 'Barbara Hall', 'September 26, 2003', 100.0]
SQL:

assistant: SELECT "Directed by" FROM "Table" WHERE "Original air date" = 'November 21, 2003';