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

### Instruction:
what's the date where visitor is phoenix suns and record is 31–30

### Inputs:
table_name: table, columns: ['#', 'Date', 'Visitor', 'Score', 'Home', 'Leading scorer', 'Attendance', 'Record', 'Streak']

### Response:
SELECT Date FROM table WHERE Visitor = Phoenix Suns AND Record = 31–30