You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: Please help me to change my recent reservation.

ASSISTANT: Sure, I am here to help you with that, can I know your name to proceed further?

USER: I am Joshua Rodriguez.

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

USER: No problem, thanks for your information.

ASSISTANT: Thank you for opting us.