We booked our hotel-to-airport transfer at the last second as we had forgotten to book it ahead of time. Where it asked for the time, we accidentally entered the time we wanted to be picked up rather than the time of our flight. It was around midnight when I e-mailed them to change the time (pick-up was the next morning), and someone responded within minutes and even called to confirm our pick-up time.

Ride was fine. The driver was knowledgeable, prompt, and courteous.