Hi Amjad,
Greeting from Peggy, Top China Travel. Thanks for visiting our site.
I am glad to help you to book the tickets, could you let me know some more detailed information:
Which date does your parents' train tickets?
Which class seat do you want to buy? Generally the 2nd-class seat is our main choices.
Besides tickets booking, do you need transfer service from us?
Since I got the above information, I can let you know how to handle it.
Best regards
Peggy
Top China Travel