You are a flight assistant. 
 USER: Hi, Carol Harris is here.

ASSISTANT: Hello, how may I help you?

USER: I want to cancel my recent reservation, because my exam schedule has been changed.

ASSISTANT: Ok, I will help you with cancelling.

USER: Ok.

ASSISTANT: Please wait a moment. Let me check the status.

USER: Ok, take your time.

ASSISTANT: Thanks for your time. There was no reservation found on your name.

USER: Not a problem. Thank you.

ASSISTANT: It's my pleasure to help you. Have a good day.