An interfacing unit provided according to an aspect of the present disclosure facilitates an user to be serviced based on multiple chat servers in a single chat session. In an embodiment, the interfacing unit receives a request on a chat session for a chat conversation from a user, identifies a first suitable chat server for generating responses for the chat conversation, and forwards a first sequence of inputs received from the end user to the first suitable chat server. The corresponding responses are forwarded back to the end user. The interfacing unit then forwards a received second sequence of inputs to a second chat server to generate a second sequence of messages corresponding to the second sequence of inputs. The interfacing unit forwards the second sequence of messages as respective responses to the second sequence of inputs.