You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I render you?

USER: I am Larry Thompson. I want to book a flight ticket to meet my uncle in Las Vegas NV - LAS, so please help me in booking a flight ticket from Washington DC - DCA.

ASSISTANT: Sure, Please let me know travelling dates.

USER: I want to fly on 12/19 and return on 12/21.

ASSISTANT: We found a connecting flight with price 300, flight number is 1003. Shall I make a move?

USER: You can proceed to booking.

ASSISTANT: Your ticket has been confirmed with Frontier airlines.

USER: Thank you.

ASSISTANT: Have a safe journey!.