It's rude to disturb others by yelling.
Candy was studying with her friend in the library after school.
Candy wants to discuss a topic with her friend.
Candy works quietly with her friend asking questions and working on their assignment.
Candy calls out to her friend across the library to understand the material.
The librarian offers to stay open an extra half hour because Candy and her friend were so well behaved.
The librarian gets annoyed and asks if Candy and her friend can leave.