Harry Potter Fanfic

I walked over to their compartment and opened the door. "Do you mind if i sit here?"
The black haired boy answered. "No, not at all,"
I gave him a shy smile and sat down.
"Thanks. I'm Atarah"
"I'm Harry. And this is Ron," He replied, pointing at the red hed boy next to him.
Ron smiled.

What should i do?