Dialogue A
（A：Receiver B：Smith）
A：Good morning．Beijing Trading Company．May I help you？
B：Good morning．This is Mr．Smith of King Electronics Company．I'd like to speak to Mr．Zhong，please．
A：We have two Zhongs here．Is that Bob Zhong，or John Zhong？
B：Bob．
A：Mr．Bob Zhong in the Overseas Sales Division？
B：Right．
A：I'm sorry，he's not in the office now．
B：Do you have any idea when he'll be back？
A：I'm sorry，I have no idea．
B：Can you ask him to call me when he cames back？It's urgent．
A：Yes，I will，Mr．Smith．
B：Thank you．
A：You're welcome．
