You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: Can you book a flight ticket from SEA to IAD?

ASSISTANT: When you are willing to travel?

USER: Feb, 14 and Feb, 16 are my planned travel dates.

ASSISTANT: Do you have any class preference?

USER: I need to travel in economy class.

ASSISTANT: May, I know your good name? Let me know your connection limit?

USER: Edward Parker here. I would prefer single connection.

ASSISTANT: Do you have any other requirements?

USER: I would prefer to fly in normal cost airlines.

ASSISTANT: We found 1013 Frontier airlines with single connection with price 200. Shall I proceed with the booking?

USER: Please proceed.

ASSISTANT: Your, booking has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.