You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I render you today?

USER: My name is Brain Brown, I want to cancel my reservation as my plan to visit New York is cancelled.

ASSISTANT: Ok.

USER: Can you cancel my ticket?

ASSISTANT: Sure, I am here to help you, please wait for a minute.

USER: Sure.

ASSISTANT: Thanks for waiting, but sorry to inform you that no reservation is found on your name to proceed further.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for choosing us.