answer: #Person1# and #Person2# discuss the plan for summer vacation. #Person1# invites #Person2# to the hiking trip.
documents: #Person1#: The summer vacation is coming. Have you any plans? 
  #Person2#: I haven't made up my mind. Maybe I will go to the US. What about you? 
  #Person1#: I am going on a hiking trip. It's good exercise as well as fun. 
  #Person2#: I think so. 
  #Person1#: So why not come and join us? Lee will come as well. 
  #Person2#: That's great. I will go hiking with you.