user: Question: What is the date of the game at Commerce Bank Ballpark?
Columns: ['Date', 'Opponent', 'Home/Away', 'Field', 'Result']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['May 31', 'Rattlers', 'Away', 'Bishop Kearney Field', 'L 13-23']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Field" = 'Commerce Bank Ballpark';