A: I missed my connecting flight to Washington D.C.
B: How did you miss your flight?
A: I was sitting in the airport bar and I lost track of time.
B: Well, that's not really our fault.
A: Fine, but what can you do for me?
B: I can put you on the stand-by list.
A: What does that mean?
B: It means that if there are empty seats on the next flight out, you can get on.
A: What if there are no seats?
B: You can buy another ticket.
A: I didn't even buy the first ticket.
B: I guess you have to buy a ticket.