英语:回信给安娜2.感谢对方邀请我参加12月25号的圣诞聚会3.由于24号一早搭乘飞机去纽约，下

Dear Anna:
Thank you for inviting me to the Christmas party on December 25th. But I am sorry to say that I have to take the plane to New York and I will go back next week. So I can not go there. I am so sorry and merry Christmas! Have a good time!
Yours,人名