Mic signal

Hello,
I understand that it is difficult to capture a voice audio signal when there is distance between the microphone and the source. I am looking to mic a person's voice with about 15 feet between the microphone and the person. However, the quality of the capture does not need to be high --- only good enough to discern what the person is saying. Does anyone have any suggestions on how to best accomplish this? Mic, amp, etc.?

Thanks!