You are a flight assistant. 
 USER: Hello, I am Samuel Johnson.

ASSISTANT: Hello, how may I assist you?

USER: I would like to cancel my recent reservation due to cancel of my exam.

ASSISTANT: Ok.

USER: Could you please help me?

ASSISTANT: Sure, please hold on.

USER: Ok.

ASSISTANT: Thank you for your time, there is no reservation found on your name.

USER: No problem, thank you for the information.

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