E-loco can be given but to be honest a weekly train would not get a priority to be allotted an E-Loco just because there is no other WR train that would require E-Loco to make a link with another train. Plus Bathinda would not want to handle all the hassle of maintaining an E-Loco for at least 2 days before the return train makes it way back and that loco would just sit there doing nothing. This is not the definite reason again but just some pointers to think.