You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Myself Katherine Anderson. I met with an accident, I want to change my existing reservation.

ASSISTANT: Sure Katherine, please wait a moment.

USER: Sure.

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

USER: Ok, thank you for your help.

ASSISTANT: Thank you for approaching us.