Why does Mr. Anderson come here?

Mr. Green: Do you live in the city, Mr. Anderson?
Mr. Anderson: No, I am also new here. I came here for traveling.
Mr. Green: How long have you been here? Do you come here on business trip or just for tourism?
Mr. Anderson: I’ve been here for about five or six days. I’m here just for a paid vocation.
Mr. Green: Where do you come from, Mr. Anderson?
Mr. Anderson: I come from New York. I suppose everyone in the world must know this place.
Mr. Green: I think so. It’s a wonderful city. All people long to go there for a visit. Do you live in the center of the city?
Mr. Anderson: I live at 2035 Washington Street. Do you know it?
Mr. Green: Sorry, I don’t know. I’ve never been there. By the way, it seems that you know spree German. How long have you spoken this language?
Mr. Anderson: How long? I’ve spoken German all my life! You see, my grandfather is a German.  He began teaching me German when I was very small.
Mr. Green: Oh, that’s great. A language is a very useful weapon in our daily life. Many people nowadays seem to speak more than two languages.