You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Could you please cancel my recent reservation due to cancel of my trip?

ASSISTANT: Sure, I am here to help you with your concern.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: My name is Sharon Campbell.

ASSISTANT: Please hold on a moment.

USER: Sure.

ASSISTANT: Sharon Campbell, no reservation has been found on your name in our database.

USER: Not a problem, thank you for checking.

ASSISTANT: Thank you for choosing us.