You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Due to bad weather conditions, I want to change my recent reservation. Can you help me with that?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: To check reservation list may I know your name please?

USER: Emily Robinson here.

ASSISTANT: Sorry Emily Robinson, there is no active reservation on your name.

USER: That's ok, thank you for checking.

ASSISTANT: You welcome.