You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: Debra Scott here. Please cancel my recent reservation which I have done previously.

ASSISTANT: Sure, please wait a moment I will check your complete reservation details and proceed further.

USER: Sure, take your time.

ASSISTANT: Sorry to say this, I did not find any details regarding your reservation in my database.

USER: That's ok, no issues.

ASSISTANT: Thank you for choosing us, have a nice day.

USER: Thanks for your response.