You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Can you please change my recent reservation? As my planned trip has been postponed.

ASSISTANT: May I know your name ?

USER: Sure, my name is Eric Johnson.

ASSISTANT: No reservation found as per your request.

USER: Oh! That's ok, thank you for giving the information anyways.

ASSISTANT: Thank you.