Have a second thought !!!

Stanley	Are they interested in working with us ?
Raymond	Not for now. They said that they would love to accept our deal if the price was negotiable.
Stanley	I see. What's your opinion ?
Raymond	They don't have enough budget, we can find someone else. I don't like to work with people who bargain over prices.
Stanley	Raymond, I think you're a good salesman but you haven't shown any passion with your job recently. You give up easily when someone turns you down. I believe if you show enough aggressiveness to your clients, they would have a second thought.
Raymond	OK. I will pay them a visit tomorrow.

Explanation :

Have second thoughts - To change your opinion about something

Example : You're not having second thoughts about getting married, are you ?