I am hosting a conference at the New York Public library in the spring. I need to provide two coffee breaks, lunch for 60 people (either boxed or simple buffet) and then a cocktail hour in the evening for around 200 people. What reasonable caterers would you suggest? For the lunches and coffee breaks it needn't be fancy. For the cocktail I just want a bar and then light snacks which will conclude the day. I can pretty much pick whomever I would like but the budget isn't unlimited. Tables, chair,etc aren't needed but linens and glassware would be.