user: Question: What date has 7 as the tie no.?
Columns: ['Tie no', 'Home team', 'Score', 'Away team', 'Date']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['1', 'Liverpool', '3–0', 'Burnley', '28 February 1979']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Tie no" = '7';