You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I need to cancel my recent reservation.

ASSISTANT: Yes sure.

USER: Please check whether any flight matching with my name?

ASSISTANT: May I know your name, please?

USER: Sure, my name is Brenda Mitchell.

ASSISTANT: Thank you, please give me couple of minutes to check.

USER: OK.

ASSISTANT: Sorry Brenda, unfortunately I did not found any reservation on your name.

USER: OK.

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

USER: Thank you for your information.