What problem does the woman mention?

W: Hi, Aaron. It’s Edna. I’m at the furniture store looking for a new desk for Mr. Richards, but l misplaced the note with his office measurements. I’ve been trying to contact him, but there’s no response when I call his phone. Do you have any idea where he is?
M: Mr. Richards is showing some clients around the manufacturing plant. He probably won’t answer his cell phone.
W: Will that take much longer? If he doesn’t call me back within an hour, I’ll have to go to his office and take the measurements again.
M: Oh, if you wait just a few minutes l can go into his office and measure it for you. I can call you back.