user: Question: What was the date when the attendance was N/A and the Man of the Match was Unknown?
Columns: ['Date', 'Opponent', 'Venue', 'Result', 'Attendance', 'Competition', 'Man of the Match']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['1st', 'Milton Keynes Lightning', 'Home', 'Lost 4-2', '1,442', 'League', 'Milos Melicherik']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Attendance" = 'N/A' AND "Man of the Match" = 'Unknown';