You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Brenda Nelson here, can you cancel my recent reservation which I have done previously.

ASSISTANT: Sure, I am mirthful to help you.

USER: Thanks.

ASSISTANT: There is no reservation found on your name.

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

ASSISTANT: Thanks for choosing us.