You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Brandon Clark here.

ASSISTANT: Clark, how can I assist you?

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 can help you. Let me check your reservation status.

USER: Ok, take your time to check. Oh! I think the ticket was not booked properly while I am booking.

ASSISTANT: Clark, I have not found any reservation by your name in our database.

USER: Oh! I think my cousin might have cancelled my reservation. Thank you for the information.

ASSISTANT: Thank you for contacting us and have a nice day.