You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you for today?

USER: I am planning to visit Denver, CO-DEN. Can you please help me to book the flight ticket?

ASSISTANT: Yes, I can help you.

USER: Thank you.

ASSISTANT: Could you tell me your dates of journey?

USER: The journey dates are 12/09 to 12/11.

ASSISTANT: Ok, can I know your nearest source airport code?

USER: The origin airport code is from DC-DCA.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: I have found a flight ticket for you with a price of 200 and 1 connection. Can I proceed to booking?

USER: Yes, proceed with my booking on the name of Samuel Young.

ASSISTANT: Your ticket is booked with UA airlines.

USER: Thank you for your help.

ASSISTANT: Thank you for consulting us.