You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Edward Wilson.

ASSISTANT: How can I assist you?

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

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

USER: That's ok, not an issue.

ASSISTANT: Thank you for reaching us.

USER: Thank you for the information.