You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Richard Rodriguez.

ASSISTANT: How may I aid you today from my end?

USER: I need to cancel my reservation due to some personal issues.So can you help me with cancellation of my reservation?

ASSISTANT: Sure, I am here to help you out. Allow me a moment.

USER: Sure.

ASSISTANT: Sorry Richard Rodriguez, there is no reservation on your name in our database.

USER: No problem, thank you for the information.

ASSISTANT: Thank you.