Greg's Barber Shop

Walked in while 1 barber was cutting hair. No other customers were waiting. The barber said hello to me. I sat down and waited 20 minutes while he cut hair on this one customer. 2 others customers walked in and sat down. The barber finished with the customer he was cutting. He came out to the waiting room and asked me if I had an appointment. I said no and he stated maybe he could fit me in today. Just curious why he did not ask me when I first walked in. He also seemed unsure and slow cutting hair.