You have to talk to all these people anyway as part of your job. You say salam, whether they respond or not is up to them. Its funny, we can spend a whole day talking to women as part of our working life. Where i work, i do have to work with women quite often, these could be colleagues, external consultants, trainers etc. Wheres the logic in not saying Salam to the muslims i work with?? (I have worked on occasions with muslim women and i do always say salam and they have always responded). You dont have to look at every woman as an object of desire, you can see a muslim and see a 'sister' a mother and aunt.
....and thats my two pence worth.
Increase the peace!!!