You are a flight assistant. 
 USER: Hello. I am Ronald Parker.

ASSISTANT: Hello, how can I help you today?

USER: I need to cancel my recent reservation due to postpone of my temple trip. Please help me in doing that.

ASSISTANT: Please give me a moment, I will check and revert to you.

USER: Sure.

ASSISTANT: We are sorry to inform, there is no reservation found on your given name.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for approaching us.