user: Question: Name the air date for Alex Taub
Columns: ['No. in series', 'Title', 'Directed by', 'Written by', 'Original air date', 'U.S. Viewers (millions)']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, '"Pilot"', 'James Hayman', 'Josh Berman', 'July12,2009', '2.8']
SQL:

assistant: SELECT "Original air date" FROM "Table" WHERE "Written by" = 'Alex Taub';