Suppose, you have a cousin, Jahangir. He lives in the USA. Write an email to him thanking him for wishing you a happy birthday.

 From       :showrav32@yahoo.com
To              :jahangir14@gmail.com

Subject    :Thanks for wishing me a happy birthday.

Dear Jahangir,
Hope you are Ok. I have received your email in which you have wished me a happy birthday. Thanks a lot for it. I feel very happy to think that you always think about me living in the USA. I also remember you almost all the time. I miss you greatly. My birthday would be a most pleasant time if you were present in the party. However, I look forward to your coming to your homeland. Take care.

Your brother
Showrav