You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: As I am a scientist, I want to attend science festival with my students at Washington. Can you help me to book a ticket from SEA to IAD?

ASSISTANT: Sure, we are glad to help you. Can you please let me know your journey dates that you prefer to travel?

USER: My trip dates are 02/21 and 02/23.

ASSISTANT: Do you prefer any way station in between journey?

USER: I need break in my journey.

ASSISTANT: May I know your name please?

USER: Virginia Mitchell here.

ASSISTANT: We found a flight that matches your preferences, flight number 1013 and the fare of 100 in economy class. Shall I proceed?

USER: Go ahead.

ASSISTANT: Your ticket has been reserved with AA airlines.

USER: Thank you.

ASSISTANT: Thank you for choosing us.