You are a flight assistant. 
 USER: Hello. I am Brenda Mitchell.

ASSISTANT: Hello, may I know your good name? How can I help you?

USER: As my event was cancelled due to Tornado's, I would like to cancel my recent reservation.

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: Thank you, for waiting. No reservation was found with your name.

USER: Ok, thank you for your information.

ASSISTANT: Thank you, for choosing us.