You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I need to cancel my reservation which I have done to participate in music event but unfortunately it got cancelled. So, can you please help me with that?

ASSISTANT: Sure, may I know your name to cancel your ticket?

USER: Sure, please check reservation with name Donna Parker.

ASSISTANT: Sorry Parker, no reservation found by your name.

USER: Oh! May be I did not booked perfectly. Anyway, thank you for your time.

ASSISTANT: Thank you for choosing us.

USER: Welcome.