You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How may I assist you?

USER: Can you please change my reservation as the semester exams which I have to attend got postponed?

ASSISTANT: May I know your name?

USER: I am Jonathan Nelson.

ASSISTANT: Ok. Reservation not found by name Jonathan Nelson.

USER: It's ok, thank you for the information.

ASSISTANT: Thanks.