You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how best I can help you today?

USER: This is Brenda Rodriguez. I want to cancel my recent reservation due to postpone of my appointment. Can you aid me in that?

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for your time, there was no reservation found on your name to cancel it.

USER: Ok, it is not an issue. Thanks for your help.

ASSISTANT: Thank you for approaching us.