Gst on purchase of rail ticket from local agent

I am registered under GST and I have purchased a ticket from Local Travel Agent and he raised a bill upon me showing IRCTC Charges of Rs.2160.00 (Which he paid to IRCTC as Fare=Rs.2057.20 + IGST=102.80) and Plus Their Service Charges Rs.600.00 Total Bill Amount is 2760.00, 
Please guide me how i accountfor the said Exp Entry in my Tally.
Whether i have to treat it as purchased from Unregistered Dealer and on reverse charge i have to deposit the tax to Govt, if yes than what rate? and What Value?

Further can I avail input of IGST paid by Agent to IRCTC?

Please help me for this

Thanks

Srawan Dadhichi