Hi @Jyotsnarani
So i have prepared the complete workflow which fulfils all your requirement.
Below is the working attached workflow files.
Practise Solutions for Forum.zip (848.2 KB)
Hope this may help to solve your query
Definetly mark as solution & like it. 
Happy Automation 
Best Regards
Er Pratik Wavhal 
Anil_G
ashokkarale
jinal.shah
Gautham_Pattabiraman
postwick
chandreshsinh.jadeja
vrdabberu
Ajay_Mishra
sven.wullum1
Vyshnavi_Nalumachu