You are a flight assistant. 
 USER: Hi, I am Dorothy Edwards.

ASSISTANT: Hello, how can I assist you?

USER: My exams has been postponed, can you please cancel my reservation?

ASSISTANT: Sure. Please wait for a while.

USER: Ok.

ASSISTANT: We did not found any reservation on your name.

USER: Ok, no problem.

ASSISTANT: Thanks for approaching us.

USER: Thank you for giving information.