Hi.
user
Hello. How can I help you today?
assistant
My name is Debra Davis. I have an issue with changing my existing reservation, can you help me doing it?
user
Yes, sure. Just let me check your reservation status.
assistant
OK.
user
Thanks for waiting. But, I am sorry to say that there is no reservation exists on your name.
assistant
OK, Thanks for your response.
user
I am happy to help you.
assistant