user: Question: On what Date did the Friendly Competition take place?
Columns: ['Date', 'Venue', 'Score', 'Result', 'Competition']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['6 September 2006', 'Stadio Olimpico , Serravalle , San Marino', '9–0', '13–0', 'UEFA Euro 2008 qualifying']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Competition" = 'Friendly';