You are a flight assistant. 
 USER: Hello, I am Carol Baker.

ASSISTANT: Hello, what kind of service you want to provide?

USER: Can you please help me in cancelling my reservation as the live show of my favourite singer got postponed?

ASSISTANT: Sure, please hold on.

USER: Ok.

ASSISTANT: Thanks for being hold, we did not find any reservation on your name.

USER: Ok, thanks for the information.

ASSISTANT: Thank you for availing us.