I received a PDF file from my travel agent and was requested to update all my details and send it back. I saved as a document to try and copy and paste so I could email it back but no copy and paste function appears. Can you help please?

Hi, it seems that it wasn't a fillable pdf file (meaning having in there fields where you could paste in information and at the end save it). So you should ask them because it might be that they want you to print that, write your details and send it back to them via mail.