A Student named Haven

I asked a student named He Cheng if he had a English name.

He replied "haven."

"What do you mean?" I replied.  "Do you have a English name or don't you?"

"I do have an English name!" he replied.

"Well, what is it?" I asked.

"Haven" he replied.

"So DO You or Don't you have an English name?!?" I asked again.

He replied "Yes, Haven!"

After several rounds of this "Who's on first" routine, I figured out that the student's name was Haven pronounced Haven't without the "t".