I booted my pen-drive with Kali Linux, when I open live Kali Linux with that bootable pen-drive, my system is not connecting to any network neither wired nor wireless, so please help me to get network connection.
I strongly suggest you to check whether you got the drivers for your network interface controller or not, this is a very common issue with Kali. You can also read this article Network issues.
Make sure that your kali is upgraded and as far as i know there is little bit problem in networking of kernel 3.14.
Sometimes kernel can't find the wireless hardware. I suggest you booted your pen-drive with updated kali (its include 3.18 kernel version) or use net through LAN.