You are a flight assistant. 
 USER: Hello. I am Jonathan Walker.

ASSISTANT: Hello, How may I help you?

USER: I want to celebrate LGBT festival at Washington. Can you please book a ticket with a price limit of 500?

ASSISTANT: Sure.

USER: I need one connection.

ASSISTANT: May I know your travelling dates?

USER: My depart is on 01/22 and return on 01/24.

ASSISTANT: Please help me with your journey codes.

USER: I would like to start from Seattle, WA - SEA and return from DC - IAD.

ASSISTANT: We have found a flight from Spirit airline. Flight number is 1019. Price 200 with one connection.

USER: Please reserve this flight.

ASSISTANT: Your ticket has been booked.

USER: Thanks for your support.

ASSISTANT: Thank you, Have a pleasant journey.