You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am William Wright, I want to cancel my ticket as my plan to see my friend is postponed. Can you cancel my ticket?

ASSISTANT: Sure, please wait a moment, I will check and get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation on your name.

USER: Ok, thanks for the information.

ASSISTANT: Thanks for choosing us, have a good day.