You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Paul Allen.

ASSISTANT: How may I help you?

USER: Can you help me to cancel my reservation I had done recently?

ASSISTANT: Sure, please wait for a moment. Sorry to say, no reservation found on your name.

USER: Ok, may be my friend had done the cancellation for me. Thank you.

ASSISTANT: Thank you for reaching us, have a nice day.