User: I would like to book Dr Doolittle 2 tickets
Assistant: What theater would you like?
User: What are the options?
Assistant: Galeria or Seattle Central
User: Galeria
Assistant: The only showing available is 6pm
User: Do they have any back row seats available?
Assistant: No only the front 2 rows are open
User: Can you book the last showing for Seattle Central
Assistant: The last showing is 9pm
User: Okay please book the back row 2 tickets
Assistant: Please confirm that your booking is for 9pm Dr Doolittle Seattle Central
User: Yes please book it
Assistant: How would you like to pay?
User: I will pay when I arrive at the counter
Assistant: The booking is confirmed
User: Thank you
Assistant: You are welcome
User: What time should I arrive
Assistant: 20 minutes before