user: Question: On what date was the type 2-8-0 with a O4 LNER Class?
Columns: ['Class', 'Type', 'Quantity', 'Date', 'LNER Class', '1946 LNER nos.']
Types: ['text', 'text', 'real', 'text', 'text', 'text']
Sample row: ['8C', '4-6-0', 2.0, '1903–04', 'B1', '1479–80']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Type" = '2-8-0' AND "LNER Class" = 'O4';