You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: Myself Mary Johnson.

ASSISTANT: Sure, please hold on for a moment, let me check.

USER: I want to cancel my recent reservation.

ASSISTANT: I am sorry, there are no reservations available with your name.

USER: Thank you for helping me.

ASSISTANT: Thank you, have a good day.