booking problem on BA.com

I am trying to book a "JFK to PEK" CX flight online
on BA.com

I can find availability on BA.com for "JFK-HKG" and "HKG-PEK" ,
but when I tries to search JFK - HKG - PEK, it will not
show me any available seat.

How can I resolve this problem ?

I tried to call BA, but they already closed.
Does BA office open during the weekend ?

BA is open 7 days a week, or at least that is what the Executive Club told me yesterday.

Is this a redemption or revenue booking?

If revenue, why do you need to book it on BA.com? You could book elsewhere unless there is a special reason?

If redemption you obviously can only book with BA

Are you sure your connection complies with rules for minimum connection times etc?

If redemption, it could be a married segments rule, or it could simply be a booking problem - BA.com can't handle everything under the sun. Are you being given the option to include partners?

I am using BA miles for CX award ticket.

I've seen this before even with valid MCT in HKG using BA's engine. Check http://www.cxagentsusa.com/GeneralInformation/subdefault.asp?SectionID=13 for MCT.

You have to call BA.