You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: My exams was postponed so I want to change my reservation, can you please help me to change my reservation?

ASSISTANT: Ok, please wait.

USER: Myself Virginia Brown. Ok.

ASSISTANT: May I know your name to proceed further? Sorry, no reservation was found on your name.

USER: Ok, no problem. Thank you so much for your response.

ASSISTANT: Thank you for availing us.