You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Jeffrey Perez here. My exam got postponed to next month. Can you help me to cancel my reservation? Please.

ASSISTANT: Yes, I will help you with that.

USER: Ok.

ASSISTANT: Let me check. I have not found any reservation by your name.

USER: That's fine. Thank you for your quick response.

ASSISTANT: Thank you for approaching us.