You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Myself Samuel Lopez. I need to cancel my recent reservation due to my exams got postponed can you please help me out?

ASSISTANT: Sure, I will help you to cancel your reservation.

USER: Thank you for your kind response.

ASSISTANT: Please give me a moment.

USER: Sure.

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

USER: That's ok, thank you for searching the details.

ASSISTANT: Welcome, have a nice day.