You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: William Jones here.

ASSISTANT: How can I assist you today?

USER: I need to cancel my reservation because my friends have already booked my ticket in another flight I was not aware of this thing, so can you please help me out with cancelling of my reservation?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please hold on a moment, I will check your reservations status.

USER: Sure, take your time.

ASSISTANT: There is no previous reservation found on your name William Jones.

USER: Oh! I think my cousin might have cancelled my reservation. Anyway, thank you for checking.

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

USER: Welcome.