You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how best I can aid you at present?

USER: I am Dennis Young, want to cancel my reservation. Can you please help me?

ASSISTANT: Sure, I am glad to help you. Please allow me a few minutes to check the reservation.

USER: Sure.

ASSISTANT: Thank you for waiting, no reservation was found on your name to cancel.

USER: It's ok, thank you.

ASSISTANT: Thank you for visiting us.