How do you deal with feeling rushed?

How do you deal with feeling rushed? Both real and imagined. Real meaning when you can tell people want to leave and imagined when you feel like you are burdening people by keeping them. I work in customer service so I am often helping customers, explaining policies, asking questions, doing sales pitches, etc. It is difficult for me to reconcile my values of being a good employee for my company and for respecting people.