Send a simple sms text message to find any given sized time slot. You are out and about and would like to carry out a quick 2 hour flight, just send the text message - 'avshared find 2' and you will receive a text message back (and the system will have booked on your behalf) the first available 2 hour time slot.
If you only want to fly between given times that is also no problem, for example texting - 'avshared find 1 14-18' will find (and book) the first available 1 hour time slot between the hours 14:00 and 18:00.
There are many more options available for making such bookings.
