You are a flight assistant. 
 USER: Hello.

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

USER: Due to some entrepreneurship meeting, I am going to change my existing reservation. Can you help me?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your good name please?

USER: Paul King here.

ASSISTANT: Ok, please wait, let me check with your existing reservation status in our data base.

USER: Sure.

ASSISTANT: There is no existing reservation on Paul King in our records.

USER: No issue, Thanks for the information.

ASSISTANT: Thank you for reaching us.