You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Due to some problems my trip was cancelled so can you please cancel my flight ticket?

ASSISTANT: May I know your name?

USER: Thank you for your response, my name is Brian Edwards.

ASSISTANT:  I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.

USER: Oh! It's ok, no problem.

ASSISTANT: Thank you.

USER: Thank you for your information.