Wish you good health and lots of happiness. 祝你身体健康，幸福快乐。

Good luck! 祝你好运！

Merry Christmas! 祝你圣诞快乐！

Happy New Year! 新年好！

Happy birthday! 生日快乐！

Enjoy yourself! 祝你玩得愉快！

Have fun! 祝你玩得愉快！

Have a good time! 祝你玩得愉快！

Congratulations! 祝贺你！

Thank you,and you too. 谢谢，也祝您快乐。