You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I want to change my reservation due to sudden change in weather condition, can you assist me?

ASSISTANT: Sure, can I know your name please?

USER: Anthony Moore.

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

USER: No problem, thank you for searching.

ASSISTANT: Thank you for approaching us.