user: Question: Tell me the surface for Eastbourne 14 June 1999
Columns: ['Outcome', 'Date', 'Tournament', 'Surface', 'Opponent', 'Score']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Runner-up', '11 July 1988', 'Nice', 'Clay', 'Sandra Cecchini', '5–7, 4–6']
SQL:

assistant: SELECT "Surface" FROM "Table" WHERE "Tournament" = 'Eastbourne' AND "Date" = '14 June 1999';