user: Question: What date did the FAI Cup with Derry City F.C. as runners-up take place?
Columns: ['Date', 'Competition', 'Winners', 'Score', 'Runners-up']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['13/3/1903', 'Irish Cup', 'Distillery', '1–1', 'Bohemians']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Competition" = 'FAI Cup' AND "Runners-up" = 'Derry City F.C.';