You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Edward Baker.

ASSISTANT: How can I assist you at this moment?

USER: I want to do modifications in my existing reservation, can you help me in that?

ASSISTANT: Sure Edward Baker, I will help you with that. Please wait a moment to check your reservation status.

USER: Thank you.

ASSISTANT: Sorry Edward Baker, no reservation has found under your name to change.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for choosing us, have a good day.