answer: Grandma gives Jack a racing car as a gift. They talk about Grandma's flight and then go home.
documents: #Person1#: Hi Grandma, it's so good to see you again.
  #Person2#: Nice to see you Jack.
  #Person1#: We haven't seen each other for half a year.
  #Person2#: You are much taller now. Here's your gift.
  #Person1#: Thanks, grandma. May I open and have a look at it?
  #Person2#: Sure, I hope you like it.
  #Person1#: A racing car right? Oh, Grandma. You are great.
  #Person2#: I'm glad you like it.
  #Person1#: Sure. Gramma this way. How is your flight?
  #Person2#: Fine. It took me about 5 hours to get here.
  #Person1#: That's a long trip, you must be very tired.
  #Person2#: I'm OK, I slept all the way.
  #Person1#: Let's go home. Our car is waiting outside.
  #Person2#: How long will it take to get home?
  #Person1#: About half an hour if the traffic is good.