Jeff: Hey, Nick, can you come to my house on Saturday? My cousin Sam from Xi'an is going to be here.
Nick: Oh, Sam! I remember we went bike riding together last fall when he visited you.
Jeff: Yes, that's right.
Nick: I'd love to come, but I'm afraid I can't. I have an exam on Monday so I must prepare for it.
Jeff: That's really too bad! Oh, but Sam isn't leaving until next Wednesday. Can you hang out with us on Monday night?
Nick: Sure! Catch you on Monday!