You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Is this flight ticket booking agency?

ASSISTANT: Yes, you are at right place.

USER: Myself Angela Anderson.

ASSISTANT: How can I assist you today?

USER: I need to cancel my reservation, as my friends have already booked my ticket in another flight along with theirs, I was not aware of this thing. Can you please cancel my reservation?

ASSISTANT: Sure, I will help you on that.

USER: Thanks.

ASSISTANT: Please give me a moment for checking your reservation status.

USER: Sure.

ASSISTANT: I did not found any reservation showing active in our database for cancelling your reservation. Once please look if it might have cancelled previously.

USER: Oh! My friend might be cancelled my ticket.

ASSISTANT: Thank you for reaching us. Have a great day.

USER: Thank you for your information.