You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Debra Clark here. 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. Please wait a while.

USER: Sure.

ASSISTANT: As per your request, your previous reservation is cancelled on your name.

USER: That's great, thank you for your help in cancelling of my reservation.

ASSISTANT: Thank you for utilizing our services. Have nice day.