You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Joseph Nelson. I want to cancel my ticket, will you help me?

ASSISTANT: Sure, please wait for a minute.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no reservation found on your name.

USER: Thank you for your information.

ASSISTANT: Thank you for opting us.