You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Benjamin Taylor here. Due to snow storm in my place, I will not be able to meet my parents. So I want to amend my existing reservation.

ASSISTANT: Sure, I am here to help you with this. Sorry Taylor, there is no reservation found as per your name to change it.

USER: No problem, thank you.

ASSISTANT: You are welcome.