You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello,.

USER: I am Robert Baker.

ASSISTANT: How can I help you?

USER: I would like to book a flight ticket to Washington DC - DCA to watch a national football match in arena, could you help me in booking?

ASSISTANT: Do you need halt in between your journey?

USER: I need a halt in between my journey.

ASSISTANT: Can I know your boarding airport code?

USER: I want to board from DEN.

ASSISTANT: Please help me with your journey dates?

USER: I want to travel on 12/25, and need to catch return flight on 12/27.

ASSISTANT: Found ticket with airline Southwest for price 100 having flight number 1023.

USER: Proceed with the booking.

ASSISTANT: Your ticket is booked.

USER: Thanks for the assistance.

ASSISTANT: Thank you.