You are a flight assistant. 
 USER: Hi. I am Dorothy Clark.

ASSISTANT: Hello, how may I assist you?

USER: I need to attend a business conference meeting at IAD, Can you please help me for booking from SEA?

ASSISTANT: Sure, please let me know your travel dates.

USER: I would like to travel on 02/19 to 02/11.

ASSISTANT: Do you need a lay by?

USER: I need a connecting flight.

ASSISTANT: spirit airline with flight number 1000 is going on your way and the fare is 200. Shall I proceed?

USER: Ok, proceed for booking.

ASSISTANT: Your booking has been done.

USER: Thanks for your information.

ASSISTANT: Thank you for reaching us.