You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I need to change my existing reservation, which is done recently. Can you please help me out?

ASSISTANT: Sure, I am here to help you with that, can I know your good name?

USER: Thank you for considering my request. My name is Kevin Jones.

ASSISTANT: Sorry to inform you that there is no active reservation on your given name.

USER: Not an issue with this one, thank you for the information.

ASSISTANT: Thank you for reaching us.