You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Brian Perez.

ASSISTANT: What service that you are looking from our agency Perez?

USER: Due to some problems my trip was cancel so can please cancel my recent flight ticket reservation?

ASSISTANT: Sure, I am glad to help you with that.

USER: Thank you for accepting my request.

ASSISTANT: Please wait a moment to check your previous reservation status.

USER: Ok.

ASSISTANT: We regret to inform you that, there is no previous reservation on your name in our database.

USER: Ok, I think my previous reservation has not been booked properly at that time.

ASSISTANT: Yes, sometimes it will happen like that.

USER: Thank you for your services.

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