options: m : really ? you never received such a low tip before and you find hard to accept that some people not giving any tips ? m : yeah , it 's hard to accept that some people not paying on purpose . well , i really tipped too much last time . m : really ? they just leave such a high tip on purpose ? and you find hard to accept that some tippers expecting quick service ? m : so , they expect quick service ? oh , it 's really hard to accept that some tippers expecting quick service .
article: m : where do you work , fiona ? f : i work in a restaurant . m : then you must know about how people tip very well . i came to this country just last week . i really do n't know how to tip . yesterday ordered a five dollar 95 cent beer , i gave the waitress $ 6 . 00 and asked her to keep the change . she did n't give me a happy look . f : well , you tipped too little . you should have left at least a 15 % tip . that 's a regular tip . m : oh , i really tipped too little last time . have you received such a low tip before ? f : sure . some customers just leave such a low tip on purpose . what 's worse , they expect quick service . it 's really hard to accept .