If it's not impossible, you may as well try. If it is impossible, at least you'll find out why.
Make your upper limit, no limit.
When the customer makes contact, he does not want a quote. He wants a commitment.
Could you achieve the possible without trying? Could you achieve the impossible if you refuse to stop trying?
The cutting edge of service is always being honed and polished.
You can't find what doesn't exist, but you can create it.