user: Question: What was the air date of part 2 of the episode whose part 1 was aired on January 31, 2008?
Columns: ['Episode #', 'Title', 'Part 1', 'Part 2', 'Part 3', 'Part 4', 'Part 5', 'Part 6']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, '"Pilot"', 'November 11, 2007', 'November 11, 2007', 'November 15, 2007', 'November 18, 2007', 'November 22, 2007', 'November 25, 2007']
SQL:

assistant: SELECT "Part 2" FROM "Table" WHERE "Part 1" = 'January 31, 2008';