你在旅游期间，住在David家中，得到了他们一家的热情款待和帮助，玩得很开心。写一封信表示感谢和问候。

问题描述：

感谢信

问题解答：

Dear David:
I did enjoy myself in your house, that was fantastic, I have never had such a party, thank you so much, if possible, please come to my house next time, and I will cook some tasty dish for you, deal? Good luck and take care!
XXX
感谢信一般不会很长的，这样就可以了。