You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Due to some urgent client meeting, I am planning to cancel my recent reservation. Can you please help me for this?

ASSISTANT: May I know your name?

USER: Myself Steven Nelson.

ASSISTANT: Sorry, no reservation found on your name to cancel.

USER: Not a big problem, anyhow thank you very much for your kind information.

ASSISTANT: Thank you for choosing us.

USER: You are welcome.