user: Question: On which date did Ian Mosey finish runner-up?
Columns: ['Date', 'Tournament', 'Winning score', 'Margin of victory', 'Runner(s)-up']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['11 Jun 1977', 'Martini International', '–15 (70-71-70-66=277)', '3 strokes', 'Simon Hobday']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Runner(s)-up" = 'Ian Mosey';