Hi.
user
Hello, how can I help you today?
assistant
I want to change my existing reservation. Can you help me for that one?
user
Sure, may I know your good name?
assistant
Sure,Charles Young here.
user
Please wait for a moment.
assistant
Sure.
user
Sorry to say that, no reservation was found with your good name.
assistant
No issues, thank you for the information.
user
Thank you for reaching us.
assistant