补全对话
A:Hello,John.Can you come to my birthday party?
B:1______________________?
A:It's on Saturday morning.
B:Oh. 2___________________.I want to,but I have a speech contest on that day.
A:What a pity（遗憾）! 3._________________?
B:November 12th.
A:Ha-ha… My sister's birthday is November 12th too!
B:4.______________?
A:She is twelve years old.You can come and meet her someday.
B:OK.Have fun on your birthday!
A:_______________________.