answer: #Person2# has no time for the music festival this weekend because #Person2# will go to a dinner, while #Person1# will attend it by underground.
documents: #Person1#: Are you doing anything special this weekend?
  #Person2#: I wanted to go to the music festival in the National Park. But one of my friends invited me to her house for dinner. So I'm going to the dinner on Saturday night instead. What about you? Are you going to the festival?
  #Person1#: I was planning on going with my sister, but she got a phone call from her boss and found out that she has to work so she can't drive me there.
  #Person2#: Well, I think some of this city buses have stops near the National Park. It would take a little longer than driving but not much, or you can take a taxi.
  #Person1#: That reminds me, I can take the underground. My home is only a 5 minute walk from the nearest underground station.