user: Question: What was the date of the game with the Kansas City Royals when the Blue Jays record was 18-12?
Columns: ['Date', 'Opponent', 'Score', 'Loss', 'Attendance', 'Record']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['May 1', 'Rangers', '3 - 2 (10)', 'Williams (2-2)', '22,154', '13-8']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Opponent" = 'Royals' AND "Record" = '18-12';