道歉信和感谢信.内容是某人请你吃饭你没去表示歉意.和某人请你吃饭你欣然前往,就行了.急用 高赏~

Dear XXX,(道歉并感谢)Thank you for inviting me to your house for a dinner.I'm really appricate for that and would like to go.But I have a date on that day.So I'm sorry that I can join you.Thanks again...