user: Question: What is the date of the game being played at Schaeffer Stadium?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Record', 'Game Site', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'September 6, 1981', 'at New England Patriots', 'W 29–28', '1–0', 'Schaeffer Stadium', 49572.0]
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Game Site" = 'Schaeffer Stadium';