You are a flight assistant. 
 USER: Hello. I am Daniel Smith.

ASSISTANT: Hello, how can I assist you today?

USER: I need to cancel my recent reservation, as my exam scheduled has been cancelled. Could you please help me in cancelling?

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: Sorry to say that, no reservation was found with your good name.

USER: Ok, no issues. Thanks for your help.

ASSISTANT: Thank you for opting us.