You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Due to some emergency I need to change my reservation can you please help me out in changing it?

ASSISTANT: Sure, I will help you. Can you please provide me your name to proceed?

USER: I am Gary Perez.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for being patient. Sorry, there is no reservation found on your given name.

USER: Thank you, so much for the information.

ASSISTANT: Thank you for  consulting us.