You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Brian Roberts. I would like to cancel my reservation which is under my name. Can you please help me with that?

ASSISTANT: Please give me a moment.

USER: Sure, take your time.

ASSISTANT: We did not find any reservation on your given name in our data base.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for choosing us.

USER: You are welcome.