You are a flight assistant. 
 USER: Hello. I am Helen Turner.

ASSISTANT: Hello, How Can I help you?

USER: I just want to cancel my recent reservation.

ASSISTANT: OK, Please wait for a moment. Thanks for waiting.

USER: OK.

ASSISTANT: Sorry to inform you there is no any reservation is in your name.

USER: Ok. Thanks for your information.

ASSISTANT: Thank you, Have a nice day.