TCP is connection oriented Protocol , so First you have to sure whether the server you want to send packet is available or not . so, in the first step
Step :1 - it send randomly generated sequence no. and SYN = 1 (means client interested to synchronized with server ) .
Step: 2 - then server send Randomly generated sequence no. , SYN=1(means client interested to synchronized with server ) , ACK=1
Step 3 : - at last sender send Next sequence number , ACK=1 (client say to server that i got your response so, i am sending Next sequence number ) .
Then , how can you directly started with step 3 ?????????????