You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I want to cancel my existing reservation, which is done recently. Can you please help me out?

ASSISTANT: May I know your name?

USER: Thank you for considering my request. Myself Steven Harris.

ASSISTANT: Sorry, no reservation found on your name.

USER: Not a big problem, anyway thank you for the information.

ASSISTANT: Thank you.