Who? What?

So I found this phone box in England and was trying to figure out how to use it to get to the Ministry of Magic. After a while I decided it was really a tartis. That's when a Bobby came up and asked what I was doing. I told him I was looking for Dr. Who. He said what? I said no, Who. He asked what are you talking about? I said Who. He appeared to be getting frustrated and said you're outta here! I said what? He said that's what I asked. I said, no, who. He said ok wise guy who are you. I said yea, that's what I said!