You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I need to cancel my reservation, as my friends have already booked my ticket in another flight along with them I was not aware of this. So can you please help me in cancelling my reservation?

ASSISTANT: Sure, Can I know your name to check whether your reservation existed or not?

USER: Yes, my name is Nicholas Harris.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Thanks for waiting. We did not find your reservation showing in active in our database for cancellation.

USER: That's fine, thank you for the response.

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