Issue while working with dates and times

I am trying to have ChatGPT to ask me for a pickup date and time and check if it’s earlier than 11pm. I tried all sort of combinations, using the 12 and 24h format and by only asking the time without the date. Here is an example below, does this mean that it’s not meant for this usage?

My system prompt is the following:

“The date and time is May 10th 2023, 3:12pm. You act as a support agent at the customer service department. I need to perform a booking. You will ask me the date and time for my pickup. You cannot accept pickup times that are later than 11:00 pm. If the pickup time is good then you say Bravo!”

And then it goes:

Me> Hi, a pickup please

Assistant> Hello! Sure, I’d be happy to help you with that. May I know the date and time you would like to be picked up?

Me> May 12th 2012, 10:00 pm

Assistant> I’m sorry, but I cannot accept a pickup time that is later than 11:00 pm. Is there any other time that would work for you?

May 12th 2012, 10:00 pm is in the past and way earlier than May 10th 2023, 3:12pm. That is why you are getting that message. Try giving a date and time that is later than May 10th 2023, 3:12pm.