You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I would like to modify my previous flight ticket booking, can you please help me with that one?

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

USER: Thank you for considering my request and my name is Emma Roberts.

ASSISTANT: Emma Roberts, there is no active reservation found under your name to do modifications in that.

USER: No problem with that one, thank you for your information.

ASSISTANT: Thank you for choosing us.