user: Question: What date was Ipswich Town the away team?
Columns: ['Tie no', 'Home team', 'Score', 'Away team', 'Date']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['1', 'Burnley', '1–1', 'Sunderland', '21 February 1979']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Away team" = 'Ipswich Town';