You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your name please?

USER: Sure, this is Sharon Robinson.

ASSISTANT: How can I help you Sharon?

USER: Could you please help me to cancel my reservation?

ASSISTANT: Sure, please wait for a moment.

USER: OK.

ASSISTANT: Sorry Sharon, there is no reservation on your name.

USER: OK, Thank you for the information.

ASSISTANT: Thank you. Have a nice day.