You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I need to cancel my reservation, which is done recently. Can you please help me out?.

ASSISTANT: Sure, I am glad to help you in cancelling your reservation.

USER: Thank you.

ASSISTANT: Please allow me a moment to check for the previous reservation status. May I know your name?

USER: Sure, take you own time. Myself Matthew Hall.

ASSISTANT: Sorry Hall, there is no active reservation have been found under your name in our database to cancel it.

USER: Not a big problem, anyway, thank you for the information.

ASSISTANT: Thank you for availing our service.

USER: Thank you for searching.