You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you at this moment?

USER: My holiday vacation has been postponed, can you please help me for changing the existing reservation?

ASSISTANT: Sure, I will help you with that, may I know your name please?

USER: Thank you, my name is Catherine Anderson.

ASSISTANT: Anderson, please hold on for a moment please to check your reservation status.

USER: Sure.

ASSISTANT: Anderson, I did not find any reservation with your name in my database.

USER: No problem, I will search another way to complete my trip.

ASSISTANT: Ok, thank you for reaching us.

USER: Thank you for your information.