I would not see the person again, period. When I was dating, the men would always confirm the date ahead of time, usually more than once. I remember one didn't and I was anxious because of this. I spoke to my male T about it and he told me I should not meet my date if he doesn't confirm, that it's a red flag. I took his advice but decided to call and cancel just in case. Lo and behold, he had forgotten all about our plans. So I remembered that advice going forward and saved myself a lot of disappointment.