You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Mary Lee.

ASSISTANT: How can I assist you for the day?

USER: I want to cancel my recent reservation, can you please help me out?

ASSISTANT: Sure, I will help you with that cancellation. Please hold for a moment, let me check the previous reservation status.

USER: Take your time.

ASSISTANT: Sorry to say, there is no reservation found with your name in our reservation list.

USER: Thank you for helping me.

ASSISTANT: Thank you for contacting us, have a great day.