Excuse me. I'd like to send this letter to the USA. How much is it?
It's 9,500 dong.
And I need some envelopes. How much are those?
They are 2,000 dong.
OK. I'll take them. How much is that altogether, please?
Well, the staps for you letter cost 9,500 dong. The envelopes are 2,000... .That is 11,500 dong altogether then, please.
Here you are. 15,000 dong
And here is your change. Thanks
Thank you. Bye.