You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you?

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 you good name please?

USER: Myself Margaret Smith.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for your time, there is no active reservation found in your name.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for availing us.