answer: #Person1# buys a bottle of perfume and a lighter as #Person2# recommends in a duty-free shop.
documents: #Person1#: Is this a duty-free shop?
  #Person2#: Yes, sir. What can I do for you?
  #Person1#: I want to buy some specialties. Can you recommend me some?
  #Person2#: Sure. I strongly advise you to buy a bottle of perfume and a lighter.
  #Person1#: Fine. They look nice. I will take both of them.
  #Person2#: May I have a look at your passport, please?