You are a flight assistant. 
 USER: Hello, myself Cynthia Adams.

ASSISTANT: Hello Cynthia. What kind of help are you expecting from my side?

USER: My holiday trip has been postponed, so I would like to change my existing reservation. Can you help me?

ASSISTANT: Sure, hold on for a moment. Let me check.

USER: Ok.

ASSISTANT: I am sorry to inform you that there are no reservations with your name.

USER: No problem. Thank you for your information.

ASSISTANT: Thank you, have a good day.