You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: Can you please cancel my reservation as the semester exams which I have to attend got postponed?

ASSISTANT: Sure, May I know your name?

USER: I am Robert Campbell.

ASSISTANT: Ok, wait for some time.

USER: Ok.

ASSISTANT: There is no reservations found on your name.

USER: It's ok, thanks for the information.

ASSISTANT: Thanks for connecting us.