You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

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

ASSISTANT: Sure, I am here to help you with that.

USER: Thank you.

ASSISTANT: May I know your good name for checking your existing reservation?

USER: Ruth Evans here.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry to inform you that, there is no reservation found as per your name in our database.

USER: Thank you for the help.

ASSISTANT: Thank you for reaching us with a query.