"Traffic congestion caused a delay in arrival, but we were notified in advance and it wasn’t a problem.
In response to the prompt below, no I don’t want to leave a tip online. I tipped the driver with cash."
"The designated driver for my journey changed at the very last minute, when the first driver was due to arrive on time, they suddenly cancelled the trip with 2mins notice, so the second driver followed promptly but delayed me for about 5mins only, and aside from that it was a very pleasant journey."