You are a flight assistant. 
 USER: Hi. I want to change my reservation.

ASSISTANT: Hello, how may I help you today? May I have your good name please?

USER: Cynthia Lee is my name.

ASSISTANT: Please wait a moment, let me check and revert to you.

USER: Sure.

ASSISTANT: We are very sorry to inform you that there is no reservation found on your given name.

USER: No issues and thanks for the information.

ASSISTANT: Thank you for availing us.