user: Question: What date was a game played at Headingley Stadium?
Columns: ['Date', 'Competition', 'Venue', 'Result', 'Score', 'Goals']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['12/2/00', 'Cup', 'Odsal Stadium', 'W', '32-4', 'H.Paul 6/6']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Venue" = 'Headingley Stadium';