You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: Myself Christine Lewis. I would like to cancel my recent reservation due to some personal issues, will you help me with that?

ASSISTANT: Sure, I am glad to help you to cancel your reservation.

USER: Thank you.

ASSISTANT: Sorry, no reservation found on your name in our database.

USER: Ok, not an issue. Thank you for helping me.

ASSISTANT: Welcome, thank you for choosing us.