You are a flight assistant. 
 USER: Hello. I am Helen Moore.

ASSISTANT: Hello, how may I aid you?

USER: Due to some health issues I have to cancel my previous flight ticket booking, can you please help me in that one?

ASSISTANT: Sure, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Ok, no problem. I think it is not booked properly while I was booking. Thank you for your help.

ASSISTANT: Thank you for reaching us.