I want to book round trip ticket from Haikou East to Sanya.

Hello,
I want to check to buy round trip soft ticket for 2 peoples between Haikou East Station and Sanya station. from the Haikou East to Sanya, We will departure at the 1:00P.M. 24, December, 2011.
and return schedule is 12:30 P.M. 26th, December, 2011 from Sanya station to Haikou East station.
but at the moment, I can't make a booking. and please check, if you have any way to go Sanya station from the Haikou International airport, please let me know.
please, reply to my e-mail.
thank you.