Mark: Hello? 
Thomas: Hello, Mark. It's Thomas. 
Mark: Oh, hello Thomas. 
Thomas: Have you got any plans for the weekend, Mark? 
Mark: On Sunday I'm going to learn karate. But I haven't got any plans for Saturday. 
Thomas: I'm going to have a party on Saturday. Would you like to come? 
Mark: Well yes, I would. Who are coming? 
Thomas: I'm going to invite about ten friends. 
Mark: What are we going to do? 
Thomas: We're going to play table tennis, and then we're going to have something to eat and drink. 
Mark: Great idea. But is it your birthday? 
Thomas: No, it isn't. It's just a party for my friends. 
Mark: What time is it going to start?