You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you?

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

ASSISTANT: Sure, can I know your name?

USER: My previous reservation has done with the name Joseph Taylor.

ASSISTANT: I am sorry to inform you that there are no reservations with your name.

USER: Ok, not an issue. May be my brother has already cancelled my ticket.

ASSISTANT: Thank you, have a good day.

USER: Anyways, thank you for your help.