Hi Harsh,
Add a dataview with Employee and add Name field in that.
After that make the Save button (Search) to call microflow, In that microflow add refresh in client in change object.
Then add List view inside the data view with a listview source as Xpath contains the query [contains(Name,$currentObject/Name)].
And Select Employee as the List view Entity.
Kindly refer the below image attached.
What you could simply do is have a listview with all employees, a text box search for that user if you dont want it in the listview itself (otherwise listview allready supports this), and a listen to widget to show the selected employee: