You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know how best I can help you today?

USER: Owing to an urgency, I would like to cancel my recent reservation. Will you help me with this?

ASSISTANT: Sure, could you please share your good name?

USER: My name is John Brown.

ASSISTANT: Sorry we couldn't find any reservation on your name.

USER: Ok, not an issue. May be my brother has already cancelled my reservation on behalf of me. Anyways, thank you for providing information.

ASSISTANT: Your welcome.