I have booked a domestic flight ticket through make my trip on 1dec-2017
from Delhi to CCU and CCU to Delhi 
the flight airlines charges the following amount i.e
Base fare-                                ₹ 5,701
airlines gst-                              ₹290
other charges-                         ₹268
total fare of Delhi to ccu-      ₹6,660
base fare                                 ₹4207
airlines gst                                ₹216
other charges                           ₹787.  
 the total fare is-                       ₹5210                                       
and another's taxes charges by travel agent(I.e.make my trip) is igst @ 18%-10.83
show which amounts can I take for it ???? guys plz suggest me 
charges is