You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I guide you?

USER: I would like to change my reservation due to heavy cyclone in my region.

ASSISTANT: May I know your good name please?

USER: Sure, my name is Brian Anderson.

ASSISTANT: Sorry, there is no active reservation found on your name in our database to change.

USER: It's ok, not an issue.

ASSISTANT: Thank you for approaching us.

USER: Thank you for checking.