You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I would like to book a flight ticket from SEA to DCA for attending a meeting.

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

USER: My travelling dates are June 25 and June 27.

ASSISTANT: May I know your connection limit?

USER: I prefer to travel in a connecting flight.

ASSISTANT: Do you need any other preference?

USER: I prefer to travel in a economy class.

ASSISTANT: Can I know your name please?

USER: I am Brian Lopez.

ASSISTANT: United Airlines is providing connecting flight with the ticket fare of 100. Shall I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket has been confirmed by flight number 1001 and an economy class.

USER: Thank you for your help.

ASSISTANT: Thanks for choosing us.