You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: Can you help me in cancellation of my reservation as my exams got cancelled?

ASSISTANT: Sure, I am here to help you to cancel your reservation. May I know your name?

USER: Thank you. My name is Donald Campbell.

ASSISTANT: Sorry, no reservation found on your name to cancel your reservation.

USER: Not an issue with that, anyways thank you for the information.

ASSISTANT: Thank you for reaching us.