You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. What can I do for you?

USER: I am Thomas Smith, I want to cancel my reservation which I have done few days ago for my exams but it got cancelled.

ASSISTANT: Sure, please wait for a moment.

USER: Ok, sure.

ASSISTANT: There is no reservation that has caught when I checked with the name you have provided.

USER: It's ok, thank you for checking my information.

ASSISTANT: My work is to help you, have a nice day.