answer: #Person1# helps #Person2# buy five notebooks and four pencils.
documents: #Person1#: What can I do for you?
  #Person2#: I would like to buy some notebooks. How much is a notebook?
  #Person1#: Two yuan.
  #Person2#: I also want some pencils.
  #Person1#: How many do you want?
  #Person2#: Five notebooks and four pencils.
  #Person1#: Did you say five notebooks and four pencils?
  #Person2#: Yes. You're right.
  #Person1#: Oh, that's twelve yuan.
  #Person2#: Here you are.
  #Person1#: Thanks. Here are your notebooks and pencils.
  #Person2#: Thank you.