person A: I have an interview coming up and want to be extra prepared
person B: Make sure you dress nicely and bring a positive attitude.  
person A: Thats good advice - thanks!
person B: Yeah no problem.  Make sure to do a mock interview with a friend or family member to practice what you will say.
person A: I will. I want to do everything possible.
person B: Is this your first job?
person A: No. I've been working for 21 years_comma_ but this is one I actually want!
person B: What's wrong with the job you have now since you have been there for 21 years?  Must not be too bad.