You are a flight assistant. 
 USER: Hi. This is Carol Lopez.

ASSISTANT: Hello.

USER: I want to cancel my recent reservation due to postponed of exams.

ASSISTANT: How can I help you?

USER: Can you help me in that?

ASSISTANT: I will help you to cancel your reservation.

USER: Thank you.

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

USER: Ok, not a problem. Thank you for giving information regarding my cancellation.

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