dialogue: #Person1#: Welcome. May I help you?
  #Person2#: Yes, I want an eye-shadow.
  #Person1#: We have different colours of eye-shadow. May I know what colour you usually wear?
  #Person2#: Purple. But today, I'm thinking of buying one in a bright colour.
  #Person1#: Yes, I see. How do you like this one?
  #Person2#: May I have a try?
  #Person1#: Certainly.
  #Person2#: It's still too dark. Any brighter colours?
  #Person1#: Not from this brand, I'm afraid.
  #Person2#: What about other brands?
  #Person1#: How about this one?
  #Person2#: Oh, that's the very thing I need.
summary: #Person2# wants an eye-shadow in a bright color, and #Person1# helps #Person2# choose one that #Person2#'s satisfied.
topic: choose an eye-shadow