You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I am Kevin Phillips, I want to travel to Washington, can you please book me a ticket with price under 200?

ASSISTANT: Sure, let me know your airport codes?

USER: My airport codes are from Denver, CO-DEN to Washington, DC-IAD.

ASSISTANT: Could you please share your travelling dates?

USER: My travelling dates are from 10/29 to 10/31.

ASSISTANT: Do you want connecting flight or direct flight?

USER: I want a connecting flight.

ASSISTANT: UA airlines with single connection and price is 200 of 1010 flight. Shall I proceed?

USER: Yes, please proceed for booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for choosing us.