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

### Instruction:
How old were Mitchell & Jessica when they danced the Cha-Cha-Cha?

### Inputs:
table_name: table, columns: ['Date', 'Round', 'Pair', 'Ages', 'Dance', 'Song']

### Response:
SELECT Ages FROM table WHERE Dance = cha-cha-cha AND Pair = mitchell & jessica