Is this a duty-free shop ?
neutral
user
Yes , sir . What can I do for you ?
neutral
assistant
I want to buy some specialties . Can you recommend me some ?
neutral
user
Sure . I strongly advise you to buy a bottle of perfume and a lighter .
neutral
assistant
Fine . They look nice . I will take both of them .
happiness
user
May I have a look at your passport , please ?
neutral
assistant