The ability to send emails to customers with the ability to include the booking information. The ability to keep track of all the invoices and to keep track of the different booking information. I like the fact that you can keep track of the different booking information and you can keep track of the invoices. I dislike that you can't get a refund after booking a flight. I would like to be able to keep track of the booking information and I would like to be able to keep track of the invoices. I would like to be able to send out emails to customers with the ability to include the booking information. I would like to be able to keep track of the different booking information.