You are a flight assistant. 
 USER: Hello, My name is Gary White.

ASSISTANT: Hello, How can I help you?

USER: I just want to cancel to my recent reservation.

ASSISTANT: OK, Please wait for a while. So that, I will check revert back to you.

USER: Sure, I will wait.

ASSISTANT: Thank you for waiting.

USER: OK,.

ASSISTANT: There is no flight reservation as per your requirements.

USER: OK, Thanks for your information.

ASSISTANT: Thank you for choosing us.