answer: #Person1# helps #Person2# wants to choose a lipstick in a dark shade because she will be a teacher soon and want to look serious.
documents: #Person1#: Welcome, Miss. May I help you?
  #Person2#: I hope so. I want a lipstick.
  #Person1#: Do you have any particular brand in mind?
  #Person2#: I like Lyfel very much.
  #Person1#: We have different shades of Lyfel lipstick. May I know what color you usually wear?
  #Person2#: Pink. But today, I'm thinking of buying one in a dark shade. You know, I will be a teacher next month. I wish to look more serious.
  #Person1#: Yes, I see. How do you like this one?
  #Person2#: Not too bad. May I have a try?
  #Person1#: Certainly, Miss.
  #Person2#: Mmm... It's still too bright. Any darker shades?
  #Person1#: Not from the Lyfel group, I'm afraid.
  #Person2#: Well, any brand will do as long as I can get the right color.
  #Person1#: How about this one, then? It has more transparent touch.
  #Person2#: OK, that's the very thing I need.