Hi there! It sounds like you're excited about the upcoming birthday and are eager to make it a special day. To respond to that message, you could say something along these lines: "Thank you for your kind offer! It's great to know that you're considerate and would like to treat me for my birthday. Although I don't drink, I appreciate that you respect my choice and are still open to enjoying the celebration. I'm definitely looking forward to getting to know you more and would be happy to share a meal with good company. Let's plan something fun, and we'll make it a memorable birthday experience together!"