完成对话。
A: Good morning, Sam!
B: Good morning, Alice! _______ you going?
A: I want to go to the food store and __________ a birthday cake for my ________.
B: ________ is your brother's birthday?
A: His birthday is ________ January 27th.
B: Which year was he born (出生)in?
A: He was born in 1997.
B: Um, it's 2012, so he is __________ years old now. Do you ________to have a birthday party for him?
A: Sure!
B: Can I go to your _______ birthday party?
A: Yes, you ________. You are also his good friends. Welcome to the ______.