You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I want to cancel my recent reservation due to cancel of my event.

ASSISTANT: Sure, We are here to help you. May I know your name?

USER: I am Margaret Walker.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT:  Thank you for waiting, but I am sorry to say that, there is no active reservation found with your name in our database to cancel it.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for opting us.