I think it depend on how the interaction would be.
For instance the following are ones that come to mind that have people interaction.
Customer service people for instance get a lot of anger from frustrated clients and that can be hard.
collections person- I have been and I don't like it but sometimes when people don't pay that someone has to be the firm hand/voice that says that it needs to be paid/ taken care of.
Tax professional where you just get information and do taxes for others not like thge other two positions I stated I may be able to handle- if I liked taxes.
Sales person probably not as I am not a pushy in your face person or one that likes to constantly ask people to buy things but the helping someone choose something that thgey are already looking for maybe I could do.