The second pillar of faith in Islam is salah or prayer. So what is prayer? Salah means to supplicate or to call out to God. When we speak about salah in Islam we mean the 5 daily prayers. 

The prayer is also about establishing a connection with Allah and talking to Him.  In Islam the prayer was ordered for us all to do. In fact when angel Jibreel gave revelation to Prophet Muhammad (PBUH) he ordered him to pray. 

We must establish that connection with Allah through prayer and supplication.