You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Michelle hill.

ASSISTANT: How can I aid you today?

USER: i want to cancel my recent reservation due to postpone of my exams.

ASSISTANT: Sure, I am here to help you, please wait for a while.

USER: Can you help me with that?

ASSISTANT: Sure. Sorry Michelle hill, no reservation done on your name.

USER: Ok, no issues.

ASSISTANT: Thank you for approaching us.

USER: Thank you.