You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Samantha Smith.

ASSISTANT: How may I guide  you today?

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

ASSISTANT: Sure, I will help you with that cancellation.

USER: Thank you for your positive response.

ASSISTANT: Please hold for a moment, let me check your previous reservation status.

USER: Sure, take your own time.

ASSISTANT: Sorry to tell you, there is no reservation found under your name in our database.

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: Thank you for reaching us, have a safe day.