Percakapan tentang admitting mistake

Teacher : i have checked your last assignment about cover letter adn resume. I found two similar assignments. They belong to Danang and Wawan. Both of you wrote same sentences. Who had copied it?
Danang : Wawan has copied it, Mom.
Wawan : No, Mom. It's a lie. I did it by myself. Danang has copied it from me.
Teacher : Tell me the truth. Who has copied it? Nobody admits it? Both of you will get bad mark.
Danang : I admit that I have done it, Mom. I didn't have any idea. I borrow Wawan's assignment and I copied it. I'm so sorry, Mom.
Teacher : Don't do it again. It was a wrong way. Please say an apology to Wawan.
Danang : Please accept my apology, Wawan. I promise I do not do it again.
Wawan : Of course.