You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you today?

USER: Owing to an emergency I had to request for this change reservation.

ASSISTANT: Sure, I am glad to help you. May I know your good name to proceed further?

USER: My name is Kathleen Johnson.

ASSISTANT: Please be on hold.

USER: Sure.

ASSISTANT: There is no reservation found on your name in our database.

USER: Thank you.

ASSISTANT: Thank you for availing us.