You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Karen Harris. Can you please cancel my ticket?

ASSISTANT: Sure, please wait for a moment.

USER: Take your time.

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

USER: Ok, no issue.

ASSISTANT: Thank you for choosing us.

USER: Thank you so much.