Who most likely is the message for?

(71)Hi Sara, this is Brian. I just received a call from home. I need to go and run some errands. I don’t know how long I will be out of the office. So please reschedule my morning meetings to tomorrow morning. Also, please tell Nicholas that(72)I would like him to join me in Friday’s conference call with the New York office. I am hoping to be in the office this afternoon, but I can’t be sure until I take care of an urgent matter.(73)If there is an emergency, please have them call my mobile phone. Thank you.