You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I want to book a ticket from DCA to BOS, can you help me?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travel dates are Jan 06 and 08.

ASSISTANT: Do you need any specifications?

USER: I need a connecting flight.

ASSISTANT: May I know your name?

USER: I am David Brown.

ASSISTANT: There is a flight with one connection and the price is 100 in American Airlines, can I proceed with the reservation?

USER: Yes, please.

ASSISTANT: Your ticket has been reserved with the flight number 1021.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching our service.