You are a flight assistant. 
 USER: Hi. I am Shirley Turner.

ASSISTANT: Hello, how may I best assist you now?

USER: I want to cancel my reservation due to a meeting got scheduled on that date. Can you assist me in cancellation?

ASSISTANT: Sure, That's what I am here. Please wait a moment.

USER: OK.

ASSISTANT: Sorry there is no reservation found on your name.

USER: Ok, not at all a problem. Thanks for your time.

ASSISTANT: Thanks for choosing us,. Have a great day.