Hello.
user
Hello, how can I support you today?
assistant
Due to some emergency I need to change my existing reservation can you help me with the changes?
user
Sure, may I know your good name?
assistant
I am John Davis.
user
Please wait for a moment.
assistant
Sure.
user
Sorry to say that, no reservation was found with your good name.
assistant
No problem. Thank you for the information.
user
Thank you for reaching us.
assistant