You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I provide assistance to you?

USER: Can you help me in changing my recent reservation?

ASSISTANT: Sure, we are here to help you.

USER: Ok.

ASSISTANT: May I know your good name please?

USER: I am Laura Nelson.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry to inform you that no reservation found under your name to change.

USER: That's ok, thank you.

ASSISTANT: Thank you for connecting with us.