You are a flight assistant. 
 USER: Hello, myself Mary Hill.

ASSISTANT: Hello, how can I help you?

USER: I made a reservation earlier this week, to participate in musical event. But, due to some issues the event got delayed. Can you please cancel my recent reservation?

ASSISTANT: Sure, wait a minute.

USER: Ok.

ASSISTANT: There is no reservation found on your name.

USER: It's ok, not an issue. Thanks for your response.

ASSISTANT: Thank you, for choosing us.