You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to book a flight ticket from BOS to DCA. Could you help me in booking?

ASSISTANT: Sure, can you share your trip dates?

USER: My travelling dates are from Dec 03 - 05.

ASSISTANT: Do you have any specifications?

USER: I prefer for connecting flight.

ASSISTANT: May I know your name?

USER: Patrick Williams.

ASSISTANT: There is a connecting flight with number 1001 in airline UA, the fare is 100 in economy class. Can I book it?

USER: Yes, please proceed.

ASSISTANT: Your ticket is reserved.

USER: Thank you for helping me.

ASSISTANT: Thank you for opting us.