You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Can you please help me to cancel my reservation as I am sick and cannot make it to trip?

ASSISTANT: Sure, I am here to help you.

USER: I appreciate that.

ASSISTANT: May I know your good name please?

USER: My name is Melissa Smith.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that, there is no reservation found as per your name in our database.

USER: Oh, may be I have cancelled it earlier. Thank you for your time.

ASSISTANT: Thank you for reaching us with a query.