Read the following dialogue and answer the question.

Luke: I need to do some activities at school. Do you have any suggestions?

Wisnu: I suggest you join a student club.

Luke: I’m not good with meeting new friends. What club should I pick?

Wisnu: You’d better try the journalist club. You like to write, don’t you?

Luke: That’s a good idea. I don’t need to talk or act much.

According to the dialogue, Luke is a/an … person.