Language focus - natural speech

Dialogue 1

Dave, I was wondering if you could give me a hand with the stocktaking this afternoon
I can't help you with the stocktaking I'm afraid as I'm flying to China this afternoon. Mike could help you though. I know he's free.
Oh really, I didn't know he was free. I'll ask Mike then.

Dialogue 2

Andy, I think that you have been to Australia. I need some information about car hire there.

I haven't been to Australia but Joanne has been to Australia.

Oh, I didn't know she had been to Australia. So, in that case I'll ask her.

Dialogue 3

Janice, I was wondering if you could come in on Saturday afternoon. We're really short staffed.

I would if I could, but I really can't, I'm afraid. I've got my sister coming from Canada and I've got to go to the airport to pick her up.

Oh have you? I didn't realize. Never mind, I'll ask Peter.

Dialogue 4

Diane, have you got a calculator I could borrow?

I haven't but Mike has.

Oh, has he? He's not in today though, is he?

Yeah, he is.