You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I need to change my recent reservation, can you please help me?

ASSISTANT: Sure, we are here to help you.

USER: Ok.

ASSISTANT: May I know your good name please?

USER: Myself Shirley Lee.

ASSISTANT: Please wait a minute.

USER: Sure, I will be waiting.

ASSISTANT: Sorry, there is no active reservation found on your name to change.

USER: That's ok, thank you for searching my details.

ASSISTANT: Thank you for opting us.