有人来找您。
Someone is here to see you.
A: Mr.Brown,someone is here to see you.
B: Please let him in.

再稍等片刻
wait a few minutes longer
A: Would you mind waiting a few minutes longer?
B: I'll give you five more minutes.

他马上来。
He'll be with you shortly.= He'll be right out.
A: I'm here to see Mr.White of the commercial department.
B: Moment please,he'll be with you shortly.

请问他在哪个办公室？
Which room is he in?
A: I'd like to see Mr.Brown,which room is he in?
B: He's on the 10th floor.When you get off the elevator,turn left please,the second door is his.

不在办公室。
not in the office/out of the office
A: I'd like to see the person in charge.
B: Sorry,he isn't in the office.

他现在没空。
He's busy/occupied.=He is not available now.
A: Could I meet your manager now?
B: Sorry,he's busy now.

见其他人可以吗？
Can someone else help/meet you?
A: The manager won't be available today.Can someone else help you?
B: I can speak to the director.

您改天再来好吗？
Could you come back another/some other time?
A: Could you come back another time?
B: Sure,I'd be happy to.

让您久等了。
Thank you for waiting.= Sorry for the wait.
A: Thank you for waiting.
B: No matter,thank you for seeing me.

让您等了很久吧？
Have you been waiting long?
A: Have you been waiting long?
B: No,I just got here.

谢谢您这么老远来这里。
Thank you for coming all this way over here.
A: Thank you for coming all this way over here.
B: It was no trouble.

路上走好。
I wish you a safe trip.
A: I have to go now.
B: I wish you a safe trip,bye.