Dear teacher x:
Hello, I'm XXX from XXX class, and I live in XXX dormitory. Because there was a conflict with my roommate in the dormitory, I was bullied by my roommate Although the teacher mediated, I didn't get along well with my roommate. In order to cooperate with the school to create a harmonious campus and let everyone have a good study and living environment, I hereby apply for the replacement of dormitory.
Please ask the teacher for approval! I know the teacher is very busy, and I am deeply sorry for the inconvenience caused by changing the dormitory this time.
I am here to convey
welcome
Applicant: XXX
date month year