You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Debra Williams here.

ASSISTANT: How can I aid you?

USER: Due to inconvenience of my work, I would like to cancel my reservation. Can you please help me for that?

ASSISTANT: Sure, I am here to help you.

USER: Thanks for that.

ASSISTANT: Please hold on a moment, I will check the records.

USER: Ok, I will wait.

ASSISTANT: Sorry to inform that, there are no reservation found on your given name.

USER: Anyway, thanks for the information.

ASSISTANT: Thanks for reaching us, have a nice day.