You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

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

ASSISTANT: Sure, I am here to help you with your concern. Can you please help me with your name?

USER: My name is Carol Anderson.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Thank you for waiting. Carol Anderson, regret to inform that there is no active reservation found under your name to amend it.

USER: No problem, thank you.

ASSISTANT: Thank you for connecting us.