user: Question: Which High assists have a Game larger than 21, and a Record of 18-6?
Columns: ['Game', 'Date', 'Opponent', 'Score', 'High points', 'High rebounds', 'High assists', 'Location', 'Record']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [15.0, 'July 7', '@ New York', 'L 79-89', 'Whalen (24)', 'McWilliams-Franklin (8)', 'Whalen (5)', 'Madison Square Garden', '12-3']
SQL:

assistant: SELECT "High assists" FROM "Table" WHERE "Game" > 21.0 AND "Record" = '18-6';