 If I don't know the answer to a question, see it's being asked from a client or something along those lines. I'll let them know that I will get an answer to them once I have an answer for them. I always do research and make sure I am not giving false information without knowing exactly what I'm saying. I always like to ask more questions to make sure I know exactly what they want to know or exactly what I need to know to be able to get the answer for them.