You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I want to cancel my recent reservation due to postpone of my event. Could you please help me?

ASSISTANT: Sure, we are here to help you. May I know your name please?

USER: I am Kenneth Hernandez.

ASSISTANT: Please stand by.

USER: Sure.

ASSISTANT: Thanks for your time, there is no active reservation found in your given name.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for opting us.