You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Due to some entrepreneurship meeting, I am going to change my existing reservation, Can you help me?

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

USER: Stephanie Carter here.

ASSISTANT: Sorry, we found no reservation on your given name.

USER: No problem, thanks for the information.

ASSISTANT: Thank you for reaching us.