user: Question: On what date was the attendance greater than 18118 when Colorado was the visitor?
Columns: ['Date', 'Visitor', 'Score', 'Home', 'Decision', 'Attendance', 'Record']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['October 4', 'St. Louis', '2 – 3', 'Phoenix', 'Legace', 17799.0, '0–1–0']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Attendance" > 18118.0 AND "Visitor" = 'Colorado';