You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Anthony Smith.

ASSISTANT: How may I assist you today?

USER: I want to change my reservation, due to heavy rainfall in New York, can you help me?

ASSISTANT: Sure, I am happy to help you.

USER: Thank you.

ASSISTANT: wait for a minute.

USER: Ok.

ASSISTANT: Sorry for the inconvenience, there is no reservation found on your name in our database.

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

ASSISTANT: Thank you for consulting us.