user: Question: What is the lowest number of people attending the game on May 30 with Colorado as the visitors?
Columns: ['Date', 'Visitor', 'Score', 'Home', 'Decision', 'Attendance']
Types: ['text', 'text', 'text', 'text', 'text', 'real']
Sample row: ['May 22', 'Colorado', '2–1', 'Dallas', 'Belfour', 17001.0]
SQL:

assistant: SELECT MIN("Attendance") FROM "Table" WHERE "Visitor" = 'Colorado' AND "Date" = 'May 30';