do somebody the courtesy of doing something
idiomPart ofcourtesy
do somebody the courtesy of doing something — idiom
1. to be polite enough to perform a specific action that shows respect for another
1.idiom
Definition
to be polite enough to perform a specific action that shows respect for another person, especially by giving them information or notice
Example
Ezra did me the courtesy of explaining why he could not attend the meeting.
The manager did the staff the courtesy of telling them about the change before the announcement.