answer: Rose calls Jack and invites him for dinner this Saturday.
documents: #Person1#: Hello, is Jack there?
  #Person2#: Speaking.
  #Person1#: Jack! It's Rose here.
  #Person2#: Hi, Rose. How's everything?
  #Person1#: Fine, thanks. I'm having several friends over for dinner this Saturday. And I was wondering if you have the time to join us.
  #Person2#: Sounds good. What time do you want me to come?
  #Person1#: Is six o'clock okay?