You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be your helping hand today?

USER: I have made an earlier reservation to attend for a exam, due to some issues my exams got postponed. Can you please assist me to change it?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: To proceed further, May I know your name?

USER: Brian Young is my name.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for your time, There was no reservation found on your given name.

USER: That's Ok, thanks for your assistance.

ASSISTANT: Thank you for opting us.