You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Lisa Robinson here.

ASSISTANT: How may I assist you today?

USER: I heard very great about National Mall at Washington that it has many museums and monuments over there to visit, I am planning to visit that place. Please help me to book a ticket from SEA to IAD.

ASSISTANT: That's good to hear Lisa, which dates that your are planning to travel?

USER: I am planning to travel on 03/26 and 03/28.

ASSISTANT: Ok, wait for a moment to search for  flights. Based on your request there is a flight 1021 with a fare of 200, is it ok for you to travel?

USER: Yes, please proceed for booking.

ASSISTANT: Lisa, your ticket has confirmed with Spirit airlines.

USER: Thank you for the help.

ASSISTANT: Enjoy your trip Lisa, happy journey.