You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I am Kevin Thomas. I need to cancel my reservation as my exams got postponed, can you please help me?

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found in your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you.