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A: Would you like some more coffee? 
B: No thanks. I'm full. We need to find our waitress and get our bill. 
A: Good luck finding the waitress! 
B: The service this evening has kind of sucked. Is that our server over there? 
A: I'll go get the check, since our server doesn't seem to be headed this way. 
B: Good. I'll just stay here until you get back. 
A: So the total is $36.00 for our dinner. 
B: How much of a tip do you think our waitress deserves? 
A: I wonder if no tip would be appropriate in light of the service. 
B: I kind of feel the same way, but they may have just been really short-staffed tonight. 
A: I think that we should leave 10%. 
B: $3.60 will be the right amount for the tip.