You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you at this moment?

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 happy to help you with that.

USER: Thank you.

ASSISTANT: May I know your name for further process?

USER: Sure, I have booked it on the name of Rebecca Campbell.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: I have found your reservation and cancelled successfully.

USER: That's great. Thank you for your help.

ASSISTANT: Thank you for choosing us.

USER: Most welcome.