- You? Say, are you on the level?
- On the level.

5 seconds sound clip from the The Moon's Our Home (1941) classic radio play.

You can hear this line at 00:17:39 in the radio play.

Quote context

[...]

- Well... Take a good look at me.

- All right. I'm looking at you. Now what?

- You mean you don't know who I am?

- Of course I don't. But I'm sure the police do.

- No, but they don't!

- How fortunate.

- Well, I can see I'll have to explain.

- Please don't. Let's change the subject. I'm sure it must be very embarrassing for you.

- Oh. Well, all right.

- Do you like New York?

- Not much. Do you?

- No! It's a terrible place! And I'm gonna get out of it, too! Somewhere where nobody knows me! Where I can be alone!

- It's funny you should say that. That's exactly how I feel.

- You? Say, are you on the level?

- On the level.

- Well, why are you looking at me like that?

- You know... You know, you could be quite lovely.

- Do you really think so?

- Yeah. In a curious sort of way.

- Well, are you sure you haven't seen me before? You don't know who I am?

- Why, no. Is there any reason why I should?

- No. No, of course not.

- Say, tell me, is this, uh, this your carriage here?

- Well, it belongs to my people.

[...]