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I note the message above said US, that was a typographical error. It should have read UK.
Can I clarify anything for you? I hope I have answered your query in a way that is simple and easy to understand. If anything remains unclear, I will be more than happy to clarify it for you. In the meantime, thank you once again for using our services.
No a loan cannot prevent him getting a visa neither would the fact that he has no savings.
What is important is for you to show that you are able to finance the trip
No you do not book the flight. You would simply print and submit the planned trip he would take if he were to be successful.
Printing the trip would be as you would do when printing the details from your computer. I am not sure how to explain this any simpler. Perhaps you could benefit from a telephone call.