user: Question: The episode that had 8.62 million US viewers originally aired on which date?
Columns: ['No. in series', 'No. in season', 'Title', 'Directed by', 'Written by', 'Original air date', 'Production code', 'U.S. viewers (millions)']
Types: ['real', 'real', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [59.0, 1.0, '"Yanks in the U.K. (Part 1)"', 'Ian Toynton', 'Hart Hanson & Karine Rosenthal', 'September3,2008', '3AKY19', '9.17']
SQL:

assistant: SELECT "Original air date" FROM "Table" WHERE "U.S. viewers (millions)" = '8.62';