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

### Instruction:
What was the original air date of episode number 1?

### Inputs:
table_name: table, columns: ['No.', 'Title', 'Directed by', 'Written by', 'Original air date', 'U.S. viewers (in millions)', '18-49 Rating/Share']

### Response:
SELECT Original air date FROM table WHERE No. = 1