Value of taxable service for hotel booking

suppose as tour operator we booked hotel at Singapore for our client (indian national) for which we paid 50,000 to hotel and charged client 55, 000. can the value of taxable service in this case be 5, 000 and can we apply 12.36% service tax on it..??
or the taxable service will be 55, 000 and we have to charge 1.24% on it..??

please clarify.....regards