You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. how can I assist you?

USER: I want to cancel my reservation.

ASSISTANT: Ok, may I know your name?

USER: I am Kenneth Smith.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Sorry, no reservation found on your name.

USER: That's ok. Thank you.

ASSISTANT: Thank you for reaching us.