user: Question: On what date was the score 6–4?
Columns: ['Date', 'Visitor', 'Score', 'Home', 'Record']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['October 7', 'Chicago Black Hawks', '3–1', 'Toronto Maple Leafs', '1–0–0']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Score" = '6–4';