You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Melissa Hall.

ASSISTANT: How can I help you today?

USER: I need your assistance in cancelling my recent reservation, can you help me with it?

ASSISTANT: Sure, I will help you to cancel your reservation.

USER: Thank you.

ASSISTANT: Please allow me a moment.

USER: Sure.

ASSISTANT: Sorry, no reservation found on your name to cancel your reservation.

USER: That's fine, thank you for your information.

ASSISTANT: Welcome, have a nice day.