You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Scott Hernandez.

ASSISTANT: How may I assist you?

USER: I want to change my existing reservation, due to earthquake in New York.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found basis on your details.

USER: That's ok, thanks for your information.

ASSISTANT: Most welcome.