Hello,.
user
Hello, how may I serve you?
assistant
I am Catherine Collins. I have an issue with my existing reservation and I need to change it. Can you help me in this regards?
user
Yes sure, I am here to help you only. Just give me a moment.
assistant
Sure.
user
Sorry for the inconvenience. We did not find any existing reservation against your name.
assistant
OK, thanks for the response.
user