answer: #Person2# was absent from the physics class last Thursday because #Person2# went on a business trip to New York.
documents: #Person1#: Welcome back! I didn't see you in physics class last Thursday.
  #Person2#: I was absent myself that day. I went on a trip to New York, I just came back last night.
  #Person1#: New York! What a city! I'm sure you had lots of fun there.
  #Person2#: No, not really. I was busy doing business. It's very hot there, too.
  #Person1#: Well, did you enjoy the trip? I have never been to New York. I'd like to go there someday.
  #Person2#: Yeah, it was OK. I went to see the Statue of Liberty and that made the trip interesting. Try to make it during the spring or autumn when the weather is nice.