You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kenneth Taylor.

ASSISTANT: How can I assist you today?

USER: I want to cancel my reservation, can you assist me?

ASSISTANT: Sure, I can help you with that. Please wait for a while.

USER: Sure.

ASSISTANT: Kenneth Taylor, there is no reservation found under your name to do cancellation.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us, have a nice day.