You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Anthony Jackson. I need to amend my reservation, can you help me out?

ASSISTANT: Sure, I will help you.

USER: Sure, take your own time.

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

USER: That's ok, no problem. Thank you for your help.

ASSISTANT: Thank you for contacting us.