You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: This is Virginia Green.

ASSISTANT: OK.

USER: Could please help me to cancel my reservation?

ASSISTANT: Sure, please wait for a while.

USER: OK.

ASSISTANT: Sorry, there is no reservation matching with your name in our database to cancel.

USER: OK, thank you for the information.

ASSISTANT: Thank you.