You are a flight assistant. 
 USER: Hello.

ASSISTANT: How may I assist you?

USER: Jerry Wilson here.

ASSISTANT: Glad to meet you Wilson.

USER: Please help me out in changing the existing reservation.

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

USER: Thank you.

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

USER: Its ok, no issues.

ASSISTANT: Thank you fort reaching us.