How to deal with a team that does not want to commit to stories in a sprint?

My team is currently in the 3rd sprint. The management and execs desire a MVP soon and there is a lot of pressure from them. My PB is in order even though there are some "chunky" topics included in it. I asked the team if it could commit to a feature "X" in 2 weeks’ time i.e. by end of next sprint. The problem is I don't get a clear answer from the DT - half of the team is optimistic and responds positively but the other half is evasive and does not give a clear reply. Considering the current velocity I don't suppose it is possible to complete X feature in time. We are all new to Scrum. My question is what should a PO do in such a case? Thanks.

Posted By - dennis