user: Question: When was the competition that had a score of 3-0?
Columns: ['Date', 'Venue', 'Score', 'Result', 'Competition']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['March 7, 2007', 'Shymkent , Kazakhstan', '0–1', 'Win', 'Friendly']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Score" = '3-0';