You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Will you please help me to cancel my reservation?

ASSISTANT: Yes, can you share me your name for checking?

USER: I am Joseph Baker. Sure.

ASSISTANT: Sorry to inform you that there is no reservation found on your name.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for reaching us.