You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

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

ASSISTANT: Please mention your name.

USER: Sure, my name is Robert Thompson.

ASSISTANT: Sorry to inform you Robert Thompson, no reservation found by your name.

USER: Ok, no problem.

ASSISTANT: Thank you for approaching our consultancy.

USER: Thank you for your information.

ASSISTANT: Have a great day.