You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Due to heavy tornadoes happening in my place, I would like to cancel my recent reservation to Dallas? Will you help me with this?

ASSISTANT: Sure, I am gleeful to help you. May I know your good name please?

USER: My name is James White.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, we are sorry to say that no reservation was found in our database on your name.

USER: Ok, not an issue. May be something went wrong while booking the ticket. Thank you for providing information.

ASSISTANT: Thanks for your approach.