You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Eric Evans here.

ASSISTANT: How may help 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: Ok, please give me a moment.

USER: Sure.

ASSISTANT: I am unable to find your previous reservation on the name which you have provided.

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

ASSISTANT: Most welcome.