Hello, This is Taro Sato from XYZ company.
May I speak to Mr. Smith in the Production Engineering Department, please?
Can I leave a message?
I'll call him again later.
Could you ask him to call me at 090-xxxx-xxxx?
Could you ask him to call me when he gets back?
Could you ask him to call me as soon as possible? This is urgent.
Could you let him know that I called?
Hello, This is K corporation.
One moment, please. I'll connect you with Mr. Smith.
May I have your company name again, please?
I'm afraid he is on another line now.
He is not at his desk at the moment.
He is out of the office now.
He left for the day.
He is off today.
Shall I have him call you back later?
Would you like to leave a message?
Thank you for calling.