You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

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

ASSISTANT: Sure, may I know your good name please?

USER: My previous reservation has done with the name Catherine Hall.

ASSISTANT: Please be on hold. There is no reservation found under your name to do cancellation.

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

ASSISTANT: Thank you for choosing us.