You can make free seat reservations up to one month in advance of departure at the information kiosk (daily 8.30am-2.30pm & 3.00-7pm; tel 222 5165) in the train station. The 10pm Express Senandung Malam gets into Kuala Lumpur early the next morning; the 7.30am Express Rakyat arrives in the early afternoon - this continues to Butterworth , arriving at 10pm. Unfortunately, none of the trains to Butterworth connect conveniently with the international express to Bangkok , involving either an overnight stop in Butterworth or, at best, a six-and-a-half-hour wait. It's a tiring journey done in one go, particularly if you don't book a berth on the overnight leg between Butterworth and Bangkok, but it is the quickest way (other than flying) to travel right through Malaysia.