You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How can I aid you today?

USER: Oblige me in changing my reservation, as my exams were postponed.

ASSISTANT: Ok. Let me know your name for checking with your reservation.

USER: Michelle Taylor is my name.

ASSISTANT: Please, wait.

USER: Sure.

ASSISTANT: Thanks for waiting.

USER: Ok.

ASSISTANT: There is no reservation found on your name. Thank you for reaching us.

USER: Thank you for addressing me.