You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: Can you please help in cancelling my recent reservation?

ASSISTANT: Sure, I am very happy to help you with that. May I know your name please.

USER: Patrick Lee here.

ASSISTANT: Just give a moment.

USER: Sure, I will wait.

ASSISTANT: Sorry, no reservation is found on your name in our database.

USER: That's ok, no problem. Thank you for checking.

ASSISTANT: Thank you for reaching us.