A mistake I see many inexperienced salespeople make is to ask the prospect if they are free or if they have a few minutes to talk when they start their cold calling introduction. This is a wrong step and should be avoided at all costs.
Just remember that if a prospect literally can’t talk to you because they are in the middle of something and they will tell you. By asking them if they have time or if right now is a good time to talk, you increase the likelihood that they will say no, now is not a good time.