You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am planning to travel from SEA to DCA, help me in booking a flight?

ASSISTANT: May I know your travelling dates?

USER: I like to travel on Sept 19 to 21.

ASSISTANT: May I know your connection limit?

USER: I prefer single connection flight.

ASSISTANT: Can I know your name please?

USER: I am Gary Taylor.

ASSISTANT: Here is a flight ticket with fare 200 and 1000 as flight number in United Airline. Shall I proceed with booking?

USER: Proceed for booking.

ASSISTANT: Ok, your ticket is confirmed in economy class.

USER: Thank you.

ASSISTANT: Thank you for choosing us.