You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Virginia Scott here.

ASSISTANT: How may I assist you?

USER: I need to change my existing reservation. Can you please help me out?

ASSISTANT: Sure, I am here to help you out.

USER: Thank you for considering my request.

ASSISTANT: Wait a moment please.

USER: Sure, I will wait.

ASSISTANT: Virginia Scott, we haven't found any reservation under your name in our database.

USER: Not a problem, anyway, thank you for the information.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your kind service.