Write the next sentence in the following story.

How to get someone to stop talking loudly on their phone
Isolate the loud talker.
This will allow you to address the behavior without embarrassing the caller or making a scene in public. See if you can take the caller aside to a secluded corner, office, or wall.
Address them formally, and be as polite as possible. Ask the caller something to the effect of, " sir/ma'am, can you talk a bit lower? Your voice is carrying.