I'm using a trial version of FastKeys and love it so much. I think it has a lot of potentials and the fact that it is low priced sold me. I think I will end up buying it soon.
Anyway in the meantime, I have some suggestions:1) Random function so you can choose random phrases/words from the wordlist if needed to make the message a bit more varied so it doesn't look like it has been copied and pasted all the time.
You know to spice things up. 
2) If/else script. For example, you could tell it to check the time and if it's earlier than 12:00, it can say good morning and if it's later than 12:00, it can say either good afternoon or good evening if it's after, let's say, 17:00.
3) Multi-choices and change the phrase based on the checked/rejected boxes (perhaps a smaller version of if/else script?). For example, if you check 2 words and reject other option, it will say I accept your paypal and credit card as a payment option, but your money check will not be accepted.
My apologies if this option is already available, I just don't see how it's possible at the moment.
Have a great day!
Dm7
for being too hasty. I knew I overlooked something. Apparently the features I requested exist in AHK script. 
