You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

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

ASSISTANT: Sure, I will help you. May I know your name please to check your reservation status?

USER: My previous reservation has done with the name George Mitchell.

ASSISTANT: Please wait a  moment.

USER: Sure, take your own time.

ASSISTANT: George, no reservation has been found on your name in our database.

USER: Ok, not an issue. May be my brother has already cancelled the ticket on behalf of me.

ASSISTANT: Thank you for approaching us.

USER: Thank you for providing information.