You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I need to attend to a party in DCA, can you reserve me a ticket from SEA?

ASSISTANT: Sure, I will help you. Can I have your name please for booking purpose?

USER: Christopher Hall here.

ASSISTANT: When would you like to plan your journey?

USER: My trip dates are Sep 30 to Oct 02.

ASSISTANT: Do you have any connection preference?

USER: I need a connecting flight.

ASSISTANT: May I know your airline preference?

USER: I am comfortable with normal-cost airline.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: I found an economy class in United Airlines with fare 300 and it has single connection. Can I book your ticket?

USER: Please proceed with booking.

ASSISTANT: Ok, your booking is confirmed with flight number 1014.

USER: Thank you.

ASSISTANT: Thank you for choosing us.

USER: Welcome.