texts: Hello , I ’ d like a return to Xi ’ an please . </s> <s> Certainly . When do you want to travel ? </s> <s> Tomorrow . </s> <s> Ok , no problem . What class of service would you like - soft sleeper or hard sleeper ? </s> <s> How much is the soft sleeper ?
labels: The soft sleeper costs 600RMB one way and the hard sleeper is 400RMB one way .