You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you at this moment?

USER: I want to cancel my recently done reservation, because of cancellation of my business meeting.

ASSISTANT: Ok.

USER: Can you please help me in this?

ASSISTANT: Sure, may I know your name?

USER: Sure, I'm Jacob Lee here.

ASSISTANT: Lee, in my database I did not found any reservations with your name.

USER: Ok, no problem.

ASSISTANT: Thank you for contacting us.

USER: Welcome.