打扰一下,请问这是纺织公司的办公室吗？
Excuse me, is this the office of the Textile Corporation?

For example:
A: Excuse me, is this the office of the Textile Corporation?
对不起,请问这是纺织公司的办公室吗？
B: Yes, what can I do for you?是的,有什么事能帮您吗？

我来自ABC贸易公司。
I'm from ABC Trade Company.

For example:
A: I'm from ABC Trade Company.我来自 ABC 贸易公司。
B: Welcome to our corporation. I'm in charge of the export business.
欢迎光临我们公司。我负责出口业务。

我是来与您探讨一下与贵公司建立业务关系的可能性的。
I'm here do discuss the possibility of establishing business relations with your corporation.

For example:
A: I'm here do discuss the possibility of establishing business relations
with your corporation.
我是来与您探讨一下与贵公司建立业务关系的可能性的。
B: We'd be very glad to do so.我们很高兴这样做。
establish business relation 建立业务关系

请问有何事？
Is there anything I can help you with?

For example:
A: Is there anything I can help you with?请问有何事？
B: I would like to see your general manager to introduce our new products.
我要见你们总经理,介绍我们的新产品。

我只是顺便来看看你。
I just dropped in to say hello.

For example:
A: Hi,Mr. Henry! Come in,please.你好,亨利先生。里边请。
B: I just dropped in to say hello.我只是顺便来看看你。
drop in顺便拜访

我希望不会耽误你的工作。
I hope I'm not keeping you from your work.

您不忙吗？
Aren't you busy?

For example:
A: Aren't you busy? 您不忙吗？
B: No, of course not. Come in, please.不,一点儿也不忙。请进。

布莱克先生在家吗？
Is Mr. Blake at home?
Is Mr. Blake in?

For example:
A: Is Mr. Blake at home?布莱克先生在家吗？
B: Yes, sir. He is in,是的,先生,他在。

请问贵姓？
Whom shall I announce?
What name shall I say?

你是想见张先生吗？
Do you want to see Mr. Zhang?

For example:
A: Do you want to see Mr. Zhang?你是想见张先生吗？
B: Yes, if he is free.是的,如果他有空的话。

我有重要的事情谈。
I've got something very important to talk about.

我相信我们从前没见过面。
I don't believe we've met before.

For example:
A: I don't believe we've met before.我相信我们从前没见过面。
B: No, I don't think we have.是的,我想是没有。

关于我们的业务,您建议我应该跟谁谈？
Do you have any suggestions about whom I should speak with regarding sales?

For example:
A: Do you have any suggestions about whom I should speak with regarding sales?
关于我们的业务,您建议我应该跟谁谈？
B: Actually, the woman who does our purchasing is in a meeting now.
事实上,帮我们做采购的那位女士正在开会。

您一向好吗？
How have you been?

For example:
A: How have you been? 您一向好吗？
B: Fine,thanks. And you? 很好,谢谢。那您呢？

看起来我们有很多共同之处。
It seems that we have a lot in common.

For example:
A: It seems that we have a lot in common.看起来我们有很多共同之处。
B: Yes. We should get together for lunch some time.
是的。我们应该找个时间聚聚,一起吃午餐。
in common共同之处

要麻烦您时,我会记得您。
I just might take you up on that.

For example:
A: If you need anything else,just let me know.
如果您要什么的话,请告诉我。
B: Thank you. I just might take you up on that.
谢谢。要麻烦您时,我会记得您。