You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kenneth Young.

ASSISTANT: How may I help you?

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

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found under your name to cancel it.

USER: That's ok.

ASSISTANT: Thanks for contacting us.

USER: Thank you.