You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Can you aid me to change my reservation due to emergency?

ASSISTANT: Sure, may I know your name to check your reservation from our database?

USER: Kathleen Baker here.

ASSISTANT: We regret to inform you that there is no active reservation found on your name to change.

USER: Ok. Thank you for the help.

ASSISTANT: Thank you for opting us.