A: good morning. May I help you? B: I want to send a letter . A: Please fill in this form and put your letter into an envelope. You can take it over here B: ok. Thanks you Here you are! A: would you like your letter to be expressed? B: Yes. How much I owe you? A: It’s 20.000₫. Do you want pay in cash or transfer? B: I want to transfer. Please give me the QR code A: Here you are. Thank you B: Thanks a lot