You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Can you please tell me how may I assist you?

USER: My business trip has been cancelled.Can you please help me for cancelling the recent reservation?

ASSISTANT: Ok. May I know your name/. ?

USER: Sure, my name is Brain Anderson.

ASSISTANT: Sorry no reservation found.

USER: Ok, It's fine. Thank you for your information.

ASSISTANT: Thank you for reaching us.