answer: Mac calls Lucy to ask her out for the concert tomorrow but Lucy has an appointment already. So Mac changes the time till next week and Lucy gladly agrees.
documents: #Person1#: Hello, Lucy. This is Mac. How are you?
  #Person2#: Fine, thank you. A bit too busy, though, you know, I'm trying to put everything in order in mynew apartment.
  #Person1#: Oh, I see. Well, I was wondering if you'd like to go to a concert tomorrow evening. I think it'll begood. And if I remember correctly, you did say you like pop music.
  #Person2#: Yes, that's right. I do. It's nice of you to ask me, Mac. But I don't think I can. Margaret has already asked me to see a friend and then we'll go tothe cinema together. In fact, she's getting the tickets this evening.
  #Person1#: Oh, well. Never mind. What about next weekend? This concert is still on then, I think, if you're free next Saturday.
  #Person2#: Oh, I'd like to very much, but what time exactly?
  #Person1#: Well, it starts at 7:00 P.m., I think.
  #Person2#: Oh, good, that'll be fine. The basketball match will be over by 5:30, I'm sure.
  #Person1#: Good, I'll call you again when I get the tickets.
  #Person2#: Sure. Bye for now.