Good morning, Mr. Smith's office. May I help you?

早晨好，这里是史密斯先生办公室，能为您效劳吗?

May I speak to Mr. Smith?

我想与史密斯先生通电话。

Who's calling , please?

请问您是哪位?

This is Mr. Li from Shanghai.

我是上海的李先生。

Please hold on for a moment. (to Mr. Smith) Mr. Smith , Mr. Li is on line two. Would you like to speak to him?

请稍等一会儿。(对史密斯先生说)史密斯先生，李先生在2号线。您要跟他说话吗?

Yes, of course. Please put him through.

当然，请接进来。

hold on 等一会，别挂断;握住不放，坚持住