You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to cancel my recent reservation, can you please help me in that?

ASSISTANT: Please wait a while. May I know your name please?

USER: Sure, please check the reservation on name Carolyn Evans.

ASSISTANT: Sorry to say, there is no reservation on your name in our database.

USER: Ok, that's not a problem. Thanks for your information.

ASSISTANT: Thank you for opting us.