You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Charles Parker.

ASSISTANT: How can I assist you now?

USER: I would like to change my reservation as I am moving for business meet, can you please help me out?

ASSISTANT: Sure, I am happy to help you with that.

USER: Thank you.

ASSISTANT: Please wait a moment to check your reservation status.

USER: Sure.

ASSISTANT: Sorry Charles Parker, no reservation has found under your name to change.

USER: Ok no problem, thank you for your services.

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