You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I need to cancel my reservation, can you help me out?

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

USER: Thank you.

ASSISTANT: Ok, please mention your name?

USER: Myself Elizabeth Brown.

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

USER: That's ok, not an issue. Thank you.

ASSISTANT: Welcome, have a nice day.