user: Question: What is the Date of the game with a Record of 2–3–1?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Game site', 'Record', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'September 16', 'Cincinnati Bengals', 'W 28–10', 'Mile High Stadium', '1–0', 49059.0]
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Record" = '2–3–1';