You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, Welcome to Tour Agency.

USER: I am Melissa Moore, I booked a flight ticket from your agency, now I want to cancel my ticket. Can you help me?

ASSISTANT: Sure, I will help you in cancelling the ticket.

USER: Good.

ASSISTANT: Sorry to tell that there is no reservation on your name.

USER: Ok, thanks for the information.

ASSISTANT: Thank you for approaching us.