You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Joseph Carter.

ASSISTANT: In which way I can aid you at this moment?

USER: I need to cancel my reservation as my exams got cancelled. Can you help me with that?

ASSISTANT: Sure, I will help you with that. Please wait a moment, I will check your previous reservation status.

USER: Thank you for considering my request, Sure I will wait for your response.

ASSISTANT: There is no previous reservation available under your name.

USER: It's ok, anyways thank you for the information.

ASSISTANT: Thank you for contacting us, have a nice day.