Worked at the airport with passangers selling tickets and exchanging tickets.
Pros: working with some really great co-workers in a fun environment.
Cons: when a flight would oversell, and we'd have to reschedule unhappy travelers.
Sold tickets, took cash or credit card for tickets, transferred from one flight to another, checked in luggage, worked in the customer service center to handle unhappy passengers. Also worked with great co-workers toward the same goal.