You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: Can you help me in cancelling the ticket?

ASSISTANT: Sure, I am here to help you with that. May I know your name?

USER: I am Katherine Thomas.

ASSISTANT: Ok, wait for a minute.

USER: Sure.

ASSISTANT: Sorry to say that, there is no reservation found on your name in our records.

USER: Ok, not a problem.

ASSISTANT: Thank you for consulting us.

USER: Thank you.