Originally Posted by Often1

There is no reason not to book whatever it is that he needs online.

In the event that QR requires a CC of him, you can have this taken care of at IAH or by faxing / scanning in a copy of the CC and your ID (generally to be avoided).

I would avoid booking through a TA because it is simply an added complication in the event of IRROPS, particularly for someone who is not computer literate.