W:Pardonme,canIaskforatableatthenon-smokingarea?M:Sure,butyouneedtowaitforacoupleofminutes.Youcanhavealookatthemenufirstatthewaitingarea.Iwillcallyouwhenthetableisavailable.Whatistherelationshipbetweenthetwospeakers? A: Employerandemployee B: Waiterandcustomer C: Interviewerandinterviewee D: Doctorandpatient