1、If you have any problems , I will take my supervisor/foreman here to talk with you , is that OK ?
2、By the way , are you satisfied with our company's service ? If there is anything wrong , please let us know , and we will make necessary corrections immediately.
3、Excuse me , would you pay the bill please ? We will go off duty.
4、Sorry , the watermelon for today have been sold out , only litchi be left , so is it ok to send you some litchi ?