answer: #Person2#'s pessimistic about the upcoming chemistry exam. #Person1# encourages #Person2#.
documents: #Person1#: I think it is time to study. Our chemistry exam is coming.
  #Person2#: Oh, I know. When is it?
  #Person1#: December 1st.
  #Person2#: What's on the test?
  #Person1#: It seems to be from chapter six to chapter ten.
  #Person2#: Well. I think I'm going to fail my chemistry exam.
  #Person1#: Why are you so pessimistic?
  #Person2#: I'm not being pessimistic. I'm being realistic. My chemistry is so bad.
  #Person1#: I believe you can pass the exam with good preparation. Don't lose your heart.
  #Person2#: Thank you. That's very nice of you.