You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

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

ASSISTANT: Yes, I can help you. Can I know your name for checking your previous reservation?

USER: My reservation was done under the name Kevin Perez.

ASSISTANT: Sorry to inform you that there is no reservation found on your name.

USER: That's ok, not an issue.

ASSISTANT: Thank you for consulting us.

USER: Anyways, thank you for the information.