We originally planned for Ganzo from Travel Gobi Mongolia to book us train tickets from UB to UU but the train was cancelled. Ganzo was great and advised us our options. He booked us tickets on bus instead which is cheaper and faster! When we arrived he also organised a driver for us to see Terelj and other big sites around UB for the day. Yandong was a great driver and spoke enough English to get by. Ganzo was great at communicating and the best price of anywhere in UB. The price for our driver was under half of what our hostel and other tour companies wanted, plus we had more flexibility as it wasn't a tour! I highly recommend TGM and Ganzo for you Mongolian travel plans.