Elena: We're going to have a surprise party for Amy on Sunday.
Tom: I know. Lucas is going to download some music.
Elena: Good. I'm going to make a cake ...
Tom: ... and buy a present ...
Elena: No, I'm not going to buy a present. You're going to go shopping for the present.
Tom: OK. And Amy and her mum are going to make pizza, I hope.
Elena: Just Amy's mum. Amy isn't going to do anything. It's a surprise party! We aren't going to say a word to her!