You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Barbara Carter.

ASSISTANT: Carter, how can I assist you?

USER: I want to cancel my recent reservation, due to heavy rainfall in New York.

ASSISTANT: Let me check the database.

USER: Ok.

ASSISTANT: Sorry Carter, no reservation found by your name.

USER: It's ok, thanks for you information.

ASSISTANT: Thank you for contacting us.