answer: Jim and Alice talk about Jim's niece who's singing at his house. Today is also Alice's birthday and she invites Jim to her birthday party.
documents: #Person1#: Who's singing in your home, Jim? 
  #Person2#: It's Ellie and her friends. 
  #Person1#: Who's Ellie? 
  #Person2#: She's my little niece. It's her birthday. They're singing 'Happy Birthday'. 
  #Person1#: Oh, I see. how old is she? 
  #Person2#: She's ten. 
  #Person1#: I suppose they're playing games. 
  #Person2#: Oh, yes. Ellie was playing games all day yesterday. By the way, Alice, when's your birthday? 
  #Person1#: Today. 
  #Person2#: Today? 
  #Person1#: Yes. 
  #Person2#: Well, imagine that! How old are you? 
  #Person1#: Eighteen. Some friends are having a birthday party for me tonight. Do you want to come? 
  #Person2#: Very much. What time? 
  #Person1#: About 6. 
  #Person2#: I'll be at your house at about five thirty. Happy birthday.