One person to weekly call two people for 11 weeks to discuss their progress with online courses as well as exercise

I need someone with good English to call two people every week. Each call will take no more than 15 minutes and should be around 10 mins. The calls will be scheduled by the person you will be calling but the time will be between 19:00 and 22:00 Eastern Time in the USA. For both people, you will be calling them about their progress with an online course. You have standard questions to work from and get some feedback from them. For one of the people will also enquire about the amount and type of exercise they have performed in the week. Milestones will be created and released every two weeks. We would prefer if you called via skype and recorded the audio of the call with software. Weekly time requirement will be less than one hour. This role could be extended in the future, by continuing to call the two people for more than 11 weeks, as well as adding additional people or calling the two people more than twice a week. Not necessary but it would be helpful if you included a file or link that was a recording of your voice.