I booked 8 people in February for our trip to Hawaii in August 2018. I did this myself w/o the assistance of AA Customer Service. The flights involved: DFW to LAX to OGG to HNL to SFO to DFW. Now, I'm attempting to book another person who has decided to join us; however, the AA website will not allow me. It continues to give me a couple of different error codes. One being, please select "American Airlines" at the bottom of the page. (I'm using the multi-city option when attempting to book this flight). Then, when I change to reflect "American Airlines" at the bottom of the page, then it tells me they are having problems with their system to please check back later. This has been an on-going problem for a couple of months now. I contacted AA Customer Service several weeks ago and was told they were probably changing some flights, to please check back. (I've continued to check back.) Yesterday, 05/22/18, I called AA again. First I spoke with a Customer Service rep who was able to find each flight in their system and priced it to me as $983 or $993. We paid $916.47 for each of our flights when I booked in February 2018. Since the time I booked in February, I have been able to get into the AA site a couple of times and the lowest I have seen this flight is about $885 per person. Also, I want to book this myself b/c I want to book it at midnight on either on a Tuesday (or Wednesday) to try and get a lesser price. But, with the system the way it is now it is not allowing me to even view the available flights myself. It is trying to force me to use an AA Representative. I only want to book one more person on this trip and I would like to do it myself, so I can try and get the best price available w/o having to pay an additional fee to AA for their Customer Service to book this flight. Also, if at all possible, I would like this person to be added to my reservation - not a separate reservation of their own. Can someone please give me guidance on how to do this? Thank you in advance.