You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you at this moment?

USER: I would like to change my reservation as I am leaving for examinations, can you please help me out?

ASSISTANT: Sure, I will help you with that. Can I know your name to check your previous reservation status?

USER: Check reservation on the name Eric Roberts.

ASSISTANT: Please be on hold.

USER: Sure.

ASSISTANT: We regret to inform you that, there is no reservation found on your name in our records.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for reaching us, have a great day.