You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Kimberly King. I want to book a ticket from SEA to IAD to attend seminar, can you help me in booking?

ASSISTANT: Sure, I am happy to help you. Please let me know your trip dates.

USER: I am departing on 03/19 and return on 03/21.

ASSISTANT: Ok, please be on hold for a while.

USER: Sure.

ASSISTANT: Flight-1004 is available with UA airlines and the ticket fare is 100 only. Shall I book the ticket for you?

USER: Please proceed for booking.

ASSISTANT: King, your ticket is booked and have a safe journey.

USER: Thank you for your help.

ASSISTANT: You are most welcome.