You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

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

ASSISTANT: Sure, may I know your name to check your reservation from our database.

USER: My name is Amy Davis.

ASSISTANT: We regret to inform you that there is no active reservation found on your name to cancel.

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

ASSISTANT: Thank you for opting us.