您能坐下来喝杯茶吗？

Would you please take a seat and have a cup of tea?

For example:

A: Would you please take a seat and have a cup of tea?

您能坐下来喝杯茶吗？

B: I'd love to. Thank you.我很乐意。谢谢你。

请让他进来。

Please send him in.

For example:

A: Mr. Green，Mr. White is here.格林先生，怀特先生来了。

B: Please send him in.请让他进来。

这边请。

This way please.

For example:

A: This way please.怀特先生，这边请。

B: Thank you very much.非常感谢。

您预约了吗？

Do you have an appointment?

For example:

A: Do you have an appointment?您预约了吗？

B: I'm afraid not.恐怕没有。

他什么时候有空儿和我见面呢？

When is it convenient for him to see me?

For example:

A: When is it convenient for him to see me?

他什么时候有空儿和我见面呢？

B: I think you'd better leave your card here, and I will contact you later. Is that OK?

我想您最好留下您的名片，迟些时候我再和您联系。这样可以吗？