You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Shirley Wilson.

ASSISTANT: How can I assist you today?

USER: I am planning to visit Washington, DCA. Can you please book me a ticket from Las Vegas, LAS?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: My preferable journey dates are from 05/03 to 05/05.

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 airlines.

ASSISTANT: Your ticket is booked. The flight number is 1003 and the airline is AA.

USER: Thank you for booking my ticket.

ASSISTANT: Welcome, have a great day.