You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you now?

USER: My scheduled examination dates has been postponed, could you please help me with changing my recent reservation?

ASSISTANT: Sure, I will help you with that. May I know your name please?

USER: I am Dorothy Smith.

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

USER: That's ok, no issues. Thank you for the information.

ASSISTANT: Thank you for approaching us, have a nice day.