Clerk: Good afternoon, can I help you?
Steven: Good afternoon. I need some stamps and envelopes.
Clerk: How many and what kind?
Steven: A dozen 30-cent stamps and 6 envelopes.
Clerk: Anything else?
Steven: That's all. How much altogether?
Clerk: $16. 50.
Steven: Thank you very much.
Clerk: You are welcome.

职员：下午好，能为您效劳吗？
史蒂文：下午好，我需要些邮票和信封。
职员：买几个？什么样的？
史蒂文：30美分一张的邮票买一打，6个信封。
职员：还要别的什么吗？
史蒂文：就这些，一共多少钱？
职员：一共16美元50美分。
史蒂文：谢谢。
职员：不客气。