You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you?

USER: I am Betty King. I want to change my existing reservation, due to heavy rainfall in Seattle.

ASSISTANT: Sure, please hold on for a minute, let me check.

USER: Ok.

ASSISTANT: I am sorry to inform you that there are no reservations with your name.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you, have a good day.