T : Sorry where is the bus to Chiang Khong?
A : Is's at platform ten which usually leave in every an hour
T : I don't see any bus at platform ten
A : Oh!... It's on the way here that will be arrived soon
T : Do I have to buy ticket before?
A : Don't have to you can pay on the bus
T : Where can I get the bus timetable?
A : At the bus station office which is in the west end of platform
T : thank you for you kindness.
A : That' alright you are welcome