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

ASSISTANT: Hello, how may I assist you?

USER: I want to cancel my recent reservation due to cancellation of my seminar at college. Could you please help me?

ASSISTANT: Sure, please wait a moment.

USER: Sure.

ASSISTANT: Thanks for being patient. Unfortunately there is no reservation found by your name.

USER: No problem, Thank you for the information.

ASSISTANT: Thank you.