Hi.
user
Hello, how can I assist you?
assistant
I need your help in changing my existing reservation, can you please help me with that?
user
Sure, may I know your good name please?
assistant
Sure, my name is Elizabeth Hill.
user
Sorry, there is no reservation found on your name in our database to change.
assistant
That's ok, thank you for your information.
user
Thank you for approaching us.
assistant