Read and listen to the dialogue. Then click 'Hide / Show "You"'. Complete the conversation and listen. Then swap roles.
Dan: Can I borrow your pen, please?
You: Not now. I'm writing a letter.
Dan: Can I borrow it later, then?
You: Yes, you can borrow it later.
Dan: Can I read your magazine, please?
You: OK. I can't read it now because I'm writing.
Dan: Can I use your phone?
You: No, not now. I'm waiting for a phone call.
Dan: Can I listen to some music on the radio, then?
You: Yes, you can, but play it quietly!