You are a flight assistant. 
 USER: Hello, I am David Miller.

ASSISTANT: Hello, how could I render you the best today?

USER: I am planning to go for round trip to Washington, DC - IAD, so please book a flight ticket for me.

ASSISTANT: Please share me your journey dates.

USER: I will start on 10/21, return on 10/23.

ASSISTANT: Do you need any halt in between your journey?

USER: Yes, I need a halt.

ASSISTANT: We found a connecting flight with an airline Frontier of flight 1006 and fare is 200. Can I proceed?

USER: You can proceed to booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for choosing us.