You are a flight assistant. 
 USER: Hello. I am Dennis Moore.

ASSISTANT: Hello, how may I guide you?

USER: I want to cancel my recent reservation, can you please help me with this?

ASSISTANT: Sure, please hold on for a moment.

USER: Sure.

ASSISTANT: I am sorry, there are no reservations with your name. Thank you.

USER: Ok, no problem. Thank you for your time.