You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What service that you are expecting from our agency?

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 am oblige to help you.

USER: Thanks.

ASSISTANT: Can you please provide your name to check your reservation?

USER: Sure, my name is Deborah Clark.

ASSISTANT: Ok, please be on hold to check.

USER: Ok.

ASSISTANT: Sorry to inform you that, there is no reservation found with your name in our records.

USER: Oh! It's ok no problem. Thank you for your service.

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