Hello.
user
Hello.
assistant
I am David Moore.
user
How can I aid you?
assistant
Due to my health problem I want to change my reservation, can you please help me to change my reservation?
user
Sure, I am glad to help you in modifying your reservation.
assistant
Thank you.
user
Please allow me a moment to check for your previous reservation status.
assistant
Sure, I will wait for your reply.
user
Sorry Moore, there is no active reservation have been found under your name in our database to amend it.
assistant
That's fine, thank you for your service.
user
Thank you for reaching us.
assistant