Hi! Hope you had a pleasant birthday celebration. I am the one to thank.
All the best!
Thanks, I really appreciate that you still remember me! Nice to hear from you. I hope all is well.
Thank-you so much for your wishes. It's been a pleasure and a privilege getting to know you. I had a wonderful birthday because of so many kind thoughts.
Although maybe delayed, a genuinely warm and wonderful birthday! Many happy returns of the day!