You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

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.

USER: Thank you.

ASSISTANT: Can you please provide your name to check the reservation status under your name?

USER: Sure, my name is Amy Allen.

ASSISTANT: Sorry for the inconvenience, there is no reservations under your name to change Allen.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: My pleasure, thank you for opting our service. Hope you have a great day.