You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Jeffrey Wright. I want to change my existing reservation, due to heavy rainfall in New York.

ASSISTANT: Sure Wright. Please give me a minute.

USER: Ok.

ASSISTANT: Jeffery, there is no reservation found with your details.

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

ASSISTANT: Thank you for choosing us.