Hi.
user
Hello, how can I help you today?
assistant
Could you help me to amend my existing reservation?
user
Sure, I am here to help you with that, can I know your good name to proceed further?
assistant
I am Timothy Campbell.
user
I am very sorry to inform you that there is no reservation found under your name in our database.
assistant
No problem, thank you for checking.
user
Thank you for choosing us.
assistant