Translation of caller in Spanish

I would like to give you a proofreader's project. Proof reading sample sentences that were entered into the dictionary by our users. It is a very tough project and needs a lot of discipline and patience.
Thank you for your email! A little question about yourself. How old are you? I think the Americans are using the word color and not colour, but I understand if you are not sure about it.
The prices for one ticket for category number 2, in row number 15 is what I have told you on the phone (about $ 500 per ticket). Tickets are in block D5, with balcony, all tickets are side by side.