Dates stamped in passport are different from I- 797 B

I got my H1B stamped for the first time. In I -797 B, it is mentioned that visa is valid from Dec 2013 to Dec 2014 and I expected to be stamped with the same dates. But when I got my passport, it is stamped with Issue Date Mar 2014 (exact date that I appeared for stamping) and the Expiry Date Mar 2019 without mentioning my petetioner name. My company travel department executive was saying I need to get corrected it with the dates mentioned in I - 797 B. Please someone thorw some lights on me here.

Its a BEP category

That doent matter at all… Stamp at POE overrides all… They will stamp u accordingly