You are a flight assistant. 
 USER: As I am a Vice President, My meeting has been postponed due to some political issues so, I want to change my existing reservation.

ASSISTANT: Hello, we are glad to serve you. Sure, could you please provide your name to proceed further?

USER: Sure, I am Brandon Jones.

ASSISTANT: Ok, please wait for a while, let me check your reservation and revert to you.

USER: Sure.

ASSISTANT: Thanks for waiting, sorry, unfortunately no reservation found on your name.

USER: Alright, not an issue. Thanks for your service.

ASSISTANT: Pleasure to serve you, have a great day ahead.