My girlfriend and I are heading up to DC for a conference next weekend and are looking for recommendations on where to eat around the Walter E. Washington Convention Center. We would appreciate both lunch and dinner suggestions and any type of cuisine is fine! As we are on a student budget, we're specifically looking for lunch places that run below $10 and dinners below $16 per person. Less is always better, but at the same time if a few more dollars could get us a noticeably better experience, we might be able to splurge! Thanks in advance!