These persons mostly don't answer your specific questions and don't give much personal information, but use general (predefined) text for their letters.
This is at least a sign that you have to be careful.
Perhaps their introduction or 'About-Us' pages or other relevant pages could give you some background information of this specific Dating Agency, which could give you a 'good' or perhaps 'wrong' feeling about this site and their services.
Also try to find out if they are a member of the Anti Scam Program.
By the way I know a travel agency here, that can organize the trip to your country very quickly. if no, then put these words right above your computer, in case you will receive a letter similar like this.
How To Start Your Personal Ad Your personal checklist Introduction letter Your first meeting Tips and Articles Information in Dutch Russian Holidays Dating flow chart Russia Maps Russian visa's Avoid dating scam guide Report Scam How to find a Russian women Russian Dating Scams Dating scams are most of the time organized by men pretending to be Russian women seeking love! Embassy receives reports almost every day of fraud committed against U. citizens by Internet correspondents professing love and romantic interest. This is why we have created this topic Never send money to a woman listed in any kind of internet dating or matchmaking agency, if she asks for it. I think it will be a good idea to use the service of this agency. Please read the whole topic about dating scams) (*) I use on purpose the words 'the person', because most of these 'scammers' are men pretending to be Russian woman and who are using stolen photo's from professional models or women from real agencies. , more specific I can say for 99.5% (according to reliable sources).
Do not think a Russian woman will fall in love with you after 2 weeks. Please, do yourself a big favor and read this whole Antiscam mini guide, it can save you from a lot of emotional damage and financial problems. There are so many single beautiful women and so many Dating Agencies. But this still means that it could be possible to come across one of the 0.5%.
Ask specific questions and check if you receive answers on these questions In case you are using an Agency with email forwarding or other mail-services, and your correspondent is not responding on your specific personal questions, this could be a sign of being suspicious.
Another important thing is to confirm with her if your (original) letters indeed are reaching her.
Try to find out if her letters to you are very personal and don't look like standard generated letters.