B. No, i don't think so
A. I'm sure I know you. Weren't you in London last year, studying english?
B. Yes. Wait a minute! Yes, now I recognize you. You're David!
A. That's right. And you're Anna!
B. Wow! What are you doing here?
A. I'm studying again. Still trying to improve my english! And you?
B. I'm on holiday. Actually, I'm looking for somewhere to buy some stamps.
A. I know where the Post Office is. I'll walk with you if you like.
B. Are you sure? That's very kind of you.
