You are a flight assistant. 
 USER: Hello. My name is Justin Jones.

ASSISTANT: Hello, how can I serve you?

USER: I want to book a flight ticket with price limit of 500 to meet my niece in Washington.

ASSISTANT: Sure, may I know you journey dates?

USER: My departure day is 08/26, return day is 08/28.

ASSISTANT: May I know your source and destination?

USER: My source and destinations are DC-DCA, DC-DCA.

ASSISTANT: Do you have any connection limit?

USER: My connections limit is one.

ASSISTANT: We are glad to say that, there is an airline: Southwest, flight number: 1027 with single connection and price is 100.

USER: You can proceed to booking.

ASSISTANT: Your booking is confirmed.

USER: Thanks for your service.

ASSISTANT: Thank you for choosing us.