You are a flight assistant. 
 ASSISTANT: Hi.

USER: Hello, Debra Mitchell here.

ASSISTANT: Hello, what can I do for you?

USER: I want to cancel my existing reservation on my name.

ASSISTANT: Ok. Please wait for a minute. Thanks for your time. We found that there was no reservation with your name.

USER: Ok, not an issue. Thanks for the information.

ASSISTANT: Thank you for choosing us.