A: Can anyone buy goods in duty-free shops?
B: Yes. You just need to show your passport and visa.
A: OK. I see.
B: What would you like to buy?
A: I'd like to buy some liquor.
B: Take your pick, please.
A: Why do people like to buy liquor in duty-free shops?
B: Because it's much cheaper to buy liquor in duty-free shops.
In most countries, liquor has a higher tax on it.
A: A lot of people buy cigarettes here too, right?
B: Yes. Cigarettes are also taxed very heavily. May I introduce cigarettes to you?
A: Thanks, but I don't smoke. OK. I Will takes these.
B: May I see your passport and visa?
A: Here are my passport and visa.
B: Thank you for coming.