You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

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

ASSISTANT: Sure, I can help you with that. May I know your good name please?

USER: My name is Janet Baker.

ASSISTANT: Ok, please wait while I'll check your reservation status.

USER: Sure.

ASSISTANT: Janet Baker, there is no active reservation found under your name to do changes in that.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for choosing us.