I have an API,Office ID,Username,password for the Amadeus API .
Can some one plz guide me how to connect the Amadeus API step by step for making the reservation(PNR Creation).
I have checked their home page and i could not get the detailed things.
You're in luck - such a guide already exists :)
Documentation on how to get connected can be found on webservices.amadeus.com by going to Technical doc -> WBS -> Handbook -> Framework documentation
Once you're connected, there's a specific guide to do flight search and make bookings based on the results of a flight search called Amadeus WBS Implementation Guide - Internet Booking Engine with Master Pricer. You can find this under Functional doc -> WBS -> PNR -> PNR_AddMultiElements
Hope that helps!