You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, may I know your good name?

USER: My name is Christopher Thomas.

ASSISTANT: How can I support you today?

USER: I need to travel from Las Vegas to participate in cultural fest. Can you help me book a flight ticket within the price of 200?

ASSISTANT: Sure, may I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Can you please provide your journey dates?

USER: I will start on 11/19 and end on 11/21.

ASSISTANT: May I know your source and destination codes?

USER: LAS is my origin and DCA is my destination.

ASSISTANT: Thank you, for providing details, we are happy to say that, we found UA airline, flight number: 1000 with single connection and fare is 200. Shall I proceed to booking?

USER: Yes please.

ASSISTANT: Your booking has been confirmed with your details.

USER: Thank you for your response.

ASSISTANT: Thank you, for reaching us. Have a great day.