answer: #Person1# has no idea about how to write a recommendation letter for Tom. #Person2# advises #Person1# to write about Tom's performances, personalities, strengths and state #Person1# is qualified to write this letter.
documents: #Person1#: I have a little trouble, and I don't know how to deal with it.
  #Person2#: What's the matter? Please tell me. Maybe I can help you.
  #Person1#: Tom wants me to write a recommendation letter for him, but I don't know how to write it.
  #Person2#: Don't worry. I know about this.
  #Person1#: Really? Tell me without delay.
  #Person2#: First you should have a salutation, which can be the company's or a person's name.
  #Person1#: Well, I see.
  #Person2#: Then you can write about his performance in college, including his academic achievements and his competence.
  #Person1#: It's easy to write those.
  #Person2#: You can also state his personality traits, hobbies and relationships with schoolmates and so on.
  #Person1#: Tom got along well with classmates. He is really a good boy.
  #Person2#: You can write all his strengths in the recommendation letter.
  #Person1#: What should I write except these?
  #Person2#: You should also state that you are his class president, so you are qualified to write this recommendation letter
  #Person1#: OK, I will remember.