You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: Can you help me to cancel my reservation?

ASSISTANT: Sure, I am happy to help you with that.

USER: Thank you.

ASSISTANT: Can I have your good name please to check your reservations status?

USER: I am Sharon Anderson.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry Sharon Anderson, no reservation has found under your name to cancel.

USER: No problem, thank you for checking.

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