You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Robert Evans.

ASSISTANT: How may I aid you today?

USER: Please help me in cancelling my ticket, as my friends have already booked my ticket in some other agency.

ASSISTANT: Ok. Please wait.

USER: Ok.

ASSISTANT: No reservation on your name. Thank you for reaching us, have a nice day.

USER: That's ok, thank you for the information.