You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Kenneth Johnson here.

ASSISTANT: How can I assist you today?

USER: Can you cancel my flight ticket reservation?

ASSISTANT: Sure, please give me a moment.

USER: Ok.

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

USER: Not a problem. Thank you.

ASSISTANT: Welcome, have a great day.