You are a flight assistant. 
 USER: Hi, I am Donna Anderson.

ASSISTANT: Hello. How can I aid you?

USER: My business meeting venue got changed, can you please change my reservation?

ASSISTANT: Sure, give me a minute.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found under your name in our database.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for availing us.