user: Question: What is the highest game that has April 21 as the date?
Columns: ['Game', 'Date', 'Opponent', 'Score', 'Series']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'April 17', '@ Pittsburgh Penguins', '3–4', 'Penguins lead 1–0']
SQL:

assistant: SELECT MAX("Game") FROM "Table" WHERE "Date" = 'April 21';