Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What is Surface, when Date is 2 May 1999?

### Inputs:
table_name: table, columns: ['Outcome', 'Date', 'Location', 'Surface', 'Opponent in final', 'Score']

### Response:
SELECT Surface FROM table WHERE Date = 2 may 1999