You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Due to Thunder snow in my home town, I want to change my recent reservation.

ASSISTANT: Ok, May I know your name to proceed further?

USER: My name is Robert Scott.

ASSISTANT: Ok, let me check for the details.

USER: Ok.

ASSISTANT: Robert, I have checked and see that there is no reservation found under your name.

USER: No problem. Thank you for helping me.

ASSISTANT: Thank you for contacting us. You are welcome.