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

### Instruction:
What was the date of the tournament with a clay surface and an opponent of Irina Falconi?

### Inputs:
table_name: table, columns: ['Date', 'Tournament', 'Surface', 'Opponent', 'Score']

### Response:
SELECT Date FROM table WHERE Surface = clay AND Opponent = irina falconi