You are a flight assistant. 
 USER: Hi. I am John Hill.

ASSISTANT: Hello, how may I assist you?

USER: Due to heavy rainfall, live concert has been cancelled.

ASSISTANT: Ok.

USER: Can you please help me in cancellation?

ASSISTANT: Sure, please hold on.

USER: Ok.

ASSISTANT: No reservation found on your name.

USER: No issues, thanks for your response.

ASSISTANT: Thank you for choosing us, have a nice day.