You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kathleen White.

ASSISTANT: How can I guide you today?

USER: I want to cancel my reservation, due to some issue. Can you help me for that?

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

USER: Thank you.

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

USER: I think my friend has already cancelled my ticket. Anyway thank you for checking.

ASSISTANT: Welcome, have a nice day.