You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I'm Virginia Nelson. Due to heavy rainfall in my city, I would like change my reservation.

ASSISTANT: Ok, please give me a minute.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: It's fine. Thank you for your help.

ASSISTANT: Thank you, have a good day.