You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: I need to book a ticket from BOS to DCA. Could you book a ticket?

ASSISTANT: Sure, may I know your good name?

USER: My name is Steven Brown.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: Travelling dates are Sept, 12 and Sept, 14.

ASSISTANT: Is there a connection you prefer in between your journey?

USER: I would prefer connecting flight.

ASSISTANT: Do you have any other restrictions to be met?

USER: No.

ASSISTANT: There is a connecting flight 1025 in United Airlines at the cost of 100 with economy class. Can I proceed?

USER: Please book a ticket.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thank you for choosing us.