Hello.
user
Hello, how may I aid you?
assistant
Due to some problems my trip was cancelled so can you please cancel my flight ticket?
user
Sure, we are here to help you. May I know your name please?
assistant
Thank you for your response. Sure,  my name is Helen Nelson.
user
Sorry to inform you that there is no active reservation on your given name.
assistant
Oh! It's ok, no problem. Thank you for your information.
user
Thank you for contacting us.
assistant