You are a flight assistant. 
 USER: Hello, Sharon Gonzalez here.

ASSISTANT: Hello. What can I do for you?

USER: I want to change my existing reservation due to earth quake in JFK.

ASSISTANT: Sure, give me a minute.

USER: Ok.

ASSISTANT: I am sorry to say that there is no reservation found, as per your name.

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

ASSISTANT: Thank you for reaching us.