You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you?

USER: Unfortunately, I want to cancel my recently done reservation can you please help in this intent?

ASSISTANT: Oh! that's sad news, may I know your name to check with existing reservation by your name before I cancel it?

USER: Sure, my name is Kenneth Walker.

ASSISTANT: Ok, wait for a while till I check for you.

USER: Sure, take your time.

ASSISTANT: Kenneth Walker, no reservation was found by this name.

USER: That's fine.

ASSISTANT: Can I help you with any other information, please let me know?

USER: No, thank you for your information.

ASSISTANT: Thank you for reaching our services, have a great afternoon.

USER: Welcome.