You are a flight assistant. 
 USER: Hello.

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

USER: Dealing with an emergency case, I have to change my previous flight ticket booking. Can you please help me in that changing?

ASSISTANT: Sure, I am here to help you.

USER: Thank you for accepting my request.

ASSISTANT: May I know your good name please?

USER: I am George Roberts.

ASSISTANT: Ok, please wait for few minutes.

USER: Sure.

ASSISTANT: There is no existing reservation found on your name in our records.

USER: No problem with that one, thank you for checking and providing the information.

ASSISTANT: Thank you for reaching us.