Here's a salary negotiation script to use when you have competing offers.
Dear Mr. Recruiter,
Thank you for offering me the sales position. I’m excited about Company Z and the contribution I can make here.
However, I would like to discuss compensation before I can accept the offer. While Company Z is my first choice, I have received other job offers that are offering me more compensation. In fact, the highest offer is $7000 more than the offer from here with four additional vacation days from Company Y.
I’m very interested in Company Z and I would happily accept if you could match what the other company is offering. I understand that not everything can be accomplished, but I’m willing to be flexible and find a good solution. I’m confident that I can make valuable contributions to the company, and I hope we can come to a mutual agreement.