My name is Raquel and I'm trying to book from this web page train tickets for 2 persons, but it's not possible, 'cause the web page fill "Sorry, no matched item has been found, please check your spelling and try again.".

What can I do to book 2 trains tickets to go from beijing to shangai 13th at evening, and 2 tickets more from shangai to beijing 19th at evening to?

Thanks a lot.
Raquel Durn