user: Question: What date was the opponent VfL Sindelfingen?
Columns: ['Round', 'Date', 'Opponent', 'Venue', 'Result', 'Attendance', 'Report']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['1st', 'bye', 'bye', 'bye', 'bye', 'bye', 'bye']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Opponent" = 'VfL Sindelfingen';