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

### Instruction:
What is the original air date if the ratings is 1.92 million?

### Inputs:
table_name: table, columns: ['Episode', 'Director', 'Writer', 'Original air date', 'Ratings (millions)']

### Response:
SELECT Original air date FROM table WHERE Ratings (millions) = 1.92