on behalf of

电话推销

A：May I speak to the head of the household?
我可以请户主听电话吗？

B：May I ask who's calling?
请问你是谁？

A：This is Susan with Jiaotong University student.I am calling on behalf of the Private Teacher Company. May I have your name, sir?
我是交通大学的在校生苏珊，我代表家教公司给您打电话。请问您贵姓？

on behalf of在线翻译

B：My name is Li.
我姓李。

A：Excuse me, Mr. Li. Do you have children, Mr. Li?
打搅了，李先生。您有孩子吗？

B：Yes.
有。

A：Great. I believe you must care for his educations.
太好了。我相信你肯定很关心他的教育吧。

B：Yes.
是的。

A：You probably heard about it. We have private teachers in our holiday.We will help your children in learning lessons in their free time. We are running a special offer on this holiday. You might want to know more about it.
或许你已经听说过。我们交大的学生在假期间做家教。我们可以帮助您的孩子在他们空闲时学习功课。 我们在这个假期有个特价优惠。我想你肯定想多了解点吧。

B：yeah.
是的。