This was often not possible in the past, and still isn't possible in all cases, but the reservations system has made substantial progress during recent years, so I'd say "probably". Furthermore, before my earlier reply to you, I confirmed that Ctrip definitely sells tickets on this route, so if nothing else, your hotel could always help you book on Ctrip with your own credit card. However, I wouldn't expect them to rise to the occasion until you are physically present at the property because they're unlikely to front the money for the tickets since you presumably don't have a longstanding business relationship with them.