answer: #Person1# calls #Person2# to borrow a glass for a dinner party because #Person1#'s son broke one two months ago.
documents: #Person1#: Hello, could I speak to Selina, please?
  #Person2#: Speaking. Is that you, Tom? What's wrong with your voice? I hardly recognize your voice.
  #Person1#: I practice singing last night. I guess I practiced too hard. You know, it lasted from 7:00 to 9:00 last night.
  #Person2#: You must have hurt your voice. So what can I do for you?
  #Person1#: Well, Bob and his girlfriend have returned from China. Jenny and I invited them to come over and have dinner with us tonight. I've just opened the box of glasses and there is one missing. Then I remembered my son broke one about 2 months ago. I remember we bought the glasses together and you bought the same set of glasses. So can I borrow a glass from you?
  #Person2#: Sure. When do you need them?
  #Person1#: Dinner begins at 6 o'clock, but Bob and his girlfriend will come over by 5:30. I need the glass before they get here.
  #Person2#: I see. I'll leave for the supermarket in about half an hour. I'll take the glass to your place. I guess you'll receive it by 5 o'clock.
  #Person1#: That'd be great. Thank you, Selina.
  #Person2#: You are quite welcome.