You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Brian white.

ASSISTANT: How can I help you?

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

ASSISTANT: Sure, give me a minute. Sorry, there is no reservation found under your name.

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

ASSISTANT: Thank you for choosing us.