You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

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

ASSISTANT: Sure, may I know the planned travel dates?

USER: My travelling dates are 18 to 20 of Jan.

ASSISTANT: Please provide me the specifications.

USER: I would like to travel in business class with a connecting flight.

ASSISTANT: May I know the name?

USER: I am Paul Clark.

ASSISTANT: Here, I found a flight with 0 connection and airfare is about 600. Shall I proceed with booking?

USER: Please proceed to booking.

ASSISTANT: In a business class, your ticket has been confirmed for the flight 1026 in Delta Airlines. Thank you for reaching us.