You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Katherine Anderson.

ASSISTANT: Welcome to flight booking agency Anderson.

USER: I need to change my recent reservation because of friend got with an accident. Can you please help that?

ASSISTANT: Sure, I will help you with that. Please hold on to check your previous reservation status.

USER: Sure.

ASSISTANT: Sorry to inform you that, there is no reservation found with your name in our records.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for reaching us, have a great day.