your teacher

a police officer

another student in your school

a waitress

your grandma

your new neighbor

your mail carrier

your boss, who has offered you to call them by their first name

the cashier at MacDonalds who is your age

your friend's mother

your doctor

a person your age at a football game

your friend's older brother

your aunt who you only see once a year at Christmas

your school bus driver who's asked you to call them by their first name

your boss

your neighbor who's been your babysitter since you were a small child

your neighbor who you always address with Mr. and his last name

anyone who offers you to call them by their first name

anyone who addresses you as "sie"