I just had to laugh at this very poor attempt of customer service from an AA chat agent. I had a schedule change that reduced a connection down to 30 minutes and was requested a new itinerary to restore the 2:00 connection time in the original reservation.

Me: Could you book us on AA1234 and AA4567 instead?
Agent: The flights that you have mentioned are not showing the available list for today
Me: Why are they not available?
Agent: That can be due to unavailability.

I ended the chat and rebooked successfully over the phone but had a good chuckle at that whopper of a response.