You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Can you aid me to book a flight ticket from BOS to DCA?

ASSISTANT: Sure, could I have your trip dates, please?

USER: My trip dates are Dec 28 and Dec 30 respectively.

ASSISTANT: Do you have any preferences?

USER: I prefer for connecting flight.

ASSISTANT: May I know your good name?

USER: Emily Lee here.

ASSISTANT: We found a connecting flight 1026 from Delta airline has fare 100. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed in economy class.

USER: Thank you.

ASSISTANT: Thank you for opting us.