You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

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

ASSISTANT: Sure, we are here to help you.

USER: Thank you for accepting my request.

ASSISTANT:  Sorry, no reservation found on your name to cancel.

USER: Ok, not an issue.

ASSISTANT: Welcome, thank you for reaching us.

USER: Thank you for your information.