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

### Instruction:
What was the date that the episode with a production code of 213 was originally aired?

### Inputs:
table_name: table, columns: ['No. in series', 'No. in season', 'Title', 'Directed by', 'Written by', 'Original U.S. air date', 'Prod. code']

### Response:
SELECT Original U.S. air date FROM table WHERE Prod. code = 213