You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Stephen Young.

ASSISTANT: how can I assist you?

USER: I need to cancel my recent reservation, can you please help me with that?

ASSISTANT: Sure, we are here to help you. Please wait a moment.

USER: Sure.

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

USER: Ok, no problem.

ASSISTANT: Thank you for choosing us.

USER: Thanks for your information.