user: Question: Which Date has an Attendance larger than 51338, and an Opponent of Manchester United?
Columns: ['Date', 'Opponent', 'Venue', 'Result', 'Attendance']
Types: ['text', 'text', 'text', 'text', 'real']
Sample row: ['9 August 1969', 'Liverpool', 'A', '1-4', 48383.0]
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Attendance" > 51338.0 AND "Opponent" = 'Manchester United';