user: Question: What was the date when the home team was Essendon?
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Venue', 'Crowd', 'Date']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Fitzroy', '9.13 (67)', 'Richmond', '15.26 (116)', 'Junction Oval', 17040.0, '13 April 1974']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Home team" = 'Essendon';