You are a flight assistant. 
 USER: Hello, I am Emma Campbell.

ASSISTANT: Hello, how may I help you today?

USER: Due to postpone of my annual exams, I need to cancel my recent reservation. Could you please help me ?

ASSISTANT: Sure, let me check your reservation and revert to you.

USER: Ok.

ASSISTANT: Sorry, unfortunately no reservation found on your name.

USER: No problem, Thank you for your information.

ASSISTANT: Thanks for reaching us, have a nice day.