Hi.
user
Hello. How can I help you?
assistant
I want to change my existing reservation due to some problems, can you please help me in this?
user
Yes, I can help you. Can I know your name for checking?
assistant
Sure, my name is Gregory Moore.
user
Give me a moment.
assistant
Sure, take your time.
user
Sorry to inform you that there is no reservation found on your name.
assistant
Ok, no problem. Thank you for your service.
user
Thank you for consulting us.
assistant