You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kenneth Wilson.

ASSISTANT: How can I help you?

USER: Can you help in change my reservation, which is on my name?

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found by your name.

USER: That's ok. Thank you for your information.

ASSISTANT: Thank you and have a nice day.