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