"Mom, I'm flying into Liverpool on Friday night via Cheapair, due at 7.45pm, and I have to be at the Mountain film Festival in Kendal next morning. Please could you look up train and bus times for me."
"Anna, there is no bus and the train will get you to Preston but you will have to wait there till morning for a connection to Kendal."
"Umm....alternative, Mom, is to take a train to Stafford, pick up my car and drive straight back. Would you meet me in Stafford?"
"Anna, your car has a flat tyre and a flat battery and I can't drive it to a garage to have it seen to in time."
"Mom, I must be in Kendal early Saturday morning. I'll think about it and get back to you."
"Umm....meanwhile, Anna, think about this puzzle: When is a cheap flight not a cheap flight? Bon voyage!"