You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Due to sudden changes my exams got cancelled. I want to alter my reservation.

ASSISTANT: Ok, may I know your name please?

USER: Jeffrey Robinson.

ASSISTANT: Jeffrey, hold on for a moment please.

USER: Ok.

ASSISTANT: Let me check in our database.

USER: Ok.

ASSISTANT: Sorry Jeffrey, there are no flights reserved on your name.

USER: Not an issue, thank you.

ASSISTANT: Welcome. Thank you for reaching us.