user: Question: What date has a loan expires date of End of the season, and a Position of MF?
Columns: ['Position', 'Player', 'Loaned to', 'Date', 'Loan expires']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['DF', 'Juan', 'Millwall', '1 August 2003', '24 September 2003']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Loan expires" = 'End of the season' AND "Position" = 'MF';