You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I would like to cancel my flight reservation as my trip got postponed, can you please help me?

ASSISTANT: Sure, I am here to help you with that, can I know your good name?

USER: My name is Samuel Johnson.

ASSISTANT: Sorry to inform you that there is no active reservation on your given name.

USER: Not an issue, thank you for the information.