You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: Can you help me to cancel my reservation?

ASSISTANT: I am happy to help you, may I know your name?

USER: Sure, I am Charles Phillips.

ASSISTANT: Ok, please hold on a moment.

USER: Sure.

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

USER: Thank you for your information.

ASSISTANT: Welcome Charles Phillips.