You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Ruth Nelson.

ASSISTANT: How can I help you?

USER: Owing to an urgency, I would like to cancel my recent reservation. Can you help me with this?

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

USER: Thank you.

ASSISTANT: Sorry Nelson, there is no reservation is showing in our data data base to cancel your reservation.

USER: Ok, not an issue. May be my brother has already cancelled my reservation on behalf of me. Thank you for providing information.

ASSISTANT: Welcome, have a nice day. Thank you for choosing us.