You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: There is a slight change in my recent reservation, can you please help me?

ASSISTANT: Sure, we are here to help you. May I know your name please?

USER: Myself Karen Hill.

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

USER: No issue, anyway thank you for checking.

ASSISTANT: Thank you for contacting us.