User Story : Recruiter views new candidate response in message details

--> I got a task to work on this jira story . please explain me the whole functionality of these user stories( explain each and everything which i have to do in this story as a i am begineer in IT Industry) and tell me what are the things that i have to implement in this story ....

// If possible give the code logic for this user stories..I am Backend engineer....

Main Content Info Epic Link: User Story: REC - Texting - Receive Text Communication (2-Way) v As a Recruiter or Hiring Manager, I want to see when a new response to my text messages is received from candidates, so I can promptly review it and get important information from the response fast. Acceptance Criteria: v Acceptance Criteria: Acceptance Criteria: Number Given When Then UX Reference The "Conversation details" page opens with the following details: I am a Recruiter or Hiring Manager, who has permissions to view and send text messages I have clicked on a candidate conversation on the Message History page that has new messages 2. The page title and the Back and Minimize button in the header, following the mockup The Back button navigates to the History page, when clicked The recipient's full name in the First Name Middle Name Last Name format Check with Diego if we want the full middle name, how many characters before we truncate, if a tooltip is needed, etc. Candidate's preferred language is displayed after the name, in parenthesis UX Mockup TBD O I view message history in the expanded texting component 3 Same as above AND I see the New Message indicator displayed in respective conversations Conversations with the New Message indicator displayed on top of the list, sorted by response date--most recent on top. There are unread responses to my messages 4 UX AC The user experience must correspond to the UX prototype and annotations, including padding, colors, adding DLS tokens, etc. The user experience must be responsive