answer: #Person2# is replying to Sue's letter. #Person1# helps to add something, such as #Person1#'s promotion. #Person2# is excited about the promotion and wants to celebrate it.
documents: #Person1#: who are you writing a letter to? 
  #Person2#: I'm just responding to Sue's letter. Do you want to help? 
  #Person1#: OK. I guess I could add something. Tell them that I send my love. 
  #Person2#: that's kind of boring. Don't you want to tell them anything else? 
  #Person1#: well, maybe you could tell them about my promotion. 
  #Person2#: you've been promoted? when did that happen? 
  #Person1#: just today. I guess I forgot to mention it. 
  #Person2#: congratulations! That's really exciting! Let's get out a bottle of wine to celebrate! 
  #Person1#: shouldn't we finish writing this letter first? 
  #Person2#: ah. That can wait. Your promotion is the best news I've heard in a long time! 
  #Person1#: it is good news, but it looked like you were almost finished. We might as well just sign off. 
  #Person2#: ok, you're right. I'll just tell them how pround I am of you for getting a promotion and then I'll thank Sue for her kind letter. 
  #Person1#: I guess you can write that I'm looking forward to seeing them in June. 
  #Person2#: that's thoughtful of you. 
  #Person1#: and also thank them from the botttom of my heart for the Christmas package they sent us. 
  #Person2#: that's right! I almost forgot about that. 
  #Person1#: what would you do without me? 
  #Person2#: we do balance each other out well. I guess we were really made for each other!