Hello.
user
Hello. How may I help you?
assistant
I am planning to change an existing reservation, due to some urgent work. Can you please help me out to change my reservation?
user
May I know your name to check your reservation?
assistant
My name is James Carter.
user
Sorry, there is no reservation found on your name.
assistant
That's fine, thank you for your information.
user
Thanks for choosing us.
assistant