answer: #Person1# tells #Person2# how people celebrate Halloween and invites #Person2# to a party.
documents: #Person1#: Do you know next week is Halloween? It's on October 31st.
  #Person2#: So what do yon do on Halloween? We don't have that holiday in Russia.
  #Person1#: Well, it's a day when kids dress up in masks and costumes. They knock on people's doors and ask for candy by saying 'trick or treat'.
  #Person2#: Hmm. Sounds interesting.
  #Person1#: But it's not just for kids. Lots of people go to costume parties. Hey, my friend Alan is having a party. Would you like to go?
  #Person2#: Sure. I'd love to.