Please buy a ticket to the correct destination.

This is because there are some unattended railway stations along the line where whether you have properly purchased your ticket or not would not be checked; it is possible to buy a ticket to a nearest station you are not to get off as dummy (because it's cheaper) in order to go to your destination that is not unattended (I'm not sure I've made myself understood but sadly there are some people who do this).

I did a presentation on my research at a small conference. It was my very first time to give a talk all in English. I was glad some people praised my research after the presentation, but I do think I need to do a lot more.