You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to change my recent reservation, can you please help me?

ASSISTANT: Sure, please provide me your good name.

USER: I am Ruth Robinson.

ASSISTANT: Sorry Ruth, no reservation found on your name.

USER: That's fine, thank you for your quick help.

ASSISTANT: My pleasure, have a good day.

USER: Welcome.