user: Question: If the Away team was South Melbourne what Date did they play?
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Venue', 'Crowd', 'Date']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Geelong', '11.6 (72)', 'Richmond', '8.11 (59)', 'Kardinia Park', 25264.0, '23 May 1964']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Away team" = 'South Melbourne';