answer: #Person1# wants #Person2# to see decorations #Person1# bought for the Christmas tree, but #Person2# has to buy a gift for her mother.
documents: #Person1#: I'm glad we live in a small town.
  #Person2#: Why?
  #Person1#: Because the houses look so nice at Christmas time.
  #Person2#: Yes, they do. Do you have a Christmas tree this year?
  #Person1#: Yes, we have a big tree this year. I bought the decorations at the five-and-tencent store yesterday. Do you want to come and see it?
  #Person2#: I can't now because I have to buy a present for my mother.
  #Person1#: When can you come?
  #Person2#: I don't know when I can come. I'll let you know later.