Dear Mrs. Smith,
Greetings of Peace!
I write to you because I would like to inform you of my intention to accept your invitation to be one of the guests in your noontime television show. This event means a lot to me and I will be very glad to accept it.
I have waited for this opportunity and I really thank God because it finally came. It will be my honor to be a part of your show and hopefully I will be able to deliver my best performance to meet your audience and viewers expectations.
I am one of your greatest fans and your invitation really makes me cry. You just have made my dreams come true by being a guest and performing in a television show.
Thank you very much for this opportunity and I am looking forward in seeing you soon.