Good morning , sir ! Can I help you ?   Good morning ! I'd like to buy twelve tickets to Beijing for October 14th .   Yes , sir . We have many trains going to Beijing , fast train , through train , express train and tourist train . Which train do you prefer ?   Well , the express one , with air-conditioning .   Then you'll have two choices . Train No . 14 leaves at 6:00 p . m , and train No . 22 leaves at 8: 00 p . m .   When do they arrive in Beijing ?   They will arrive the next morning , at 8: 00 a . m . and 10:00 a m . respectively .   In that case I think Train No . 14 will be better . We can do more sightseeing in Beijing . 