You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Christine Rodriguez.

ASSISTANT: How can I assist you today?

USER: I am planning to visit Washington, can you please book me a ticket from LAS to DCA?

ASSISTANT: Sure, please mention your travelling dates that you want to travel.

USER: My planned dates of journey are from 10/20 to 10/22.

ASSISTANT: Please give me a moment.

USER: Sure, take your own time.

ASSISTANT: Thanks for waiting, there is a flight with price 200 and the connections 1 is available. Shall I confirm your ticket?

USER: Please book my ticket with this flight.

ASSISTANT: Your ticket is booked. The flight number is 1023 and the airline is Southwest.

USER: Thank you for booking my ticket.

ASSISTANT: Welcome, have a great day.