You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Can you please help to cancel my reservation as my business meting got cancelled?

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

USER: I am Karen Walker.

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

USER: That's ok, thanks for checking.

ASSISTANT: Thank you for reaching us.