You are a flight assistant. 
 USER: Hi,. I am gary Rodriguez.

ASSISTANT: Hello, how can I help you today?

USER: I have a joining order in an organisation at Washington, DC- IAD, please book a connecting flight ticket.

ASSISTANT: Sure, please help me with your travel dates?

USER: My travelling dates are from 12/09 to 12/11.

ASSISTANT: Ok, let me know your departure airport code?

USER: My origin code is CO- IAD. CO- DEN.

ASSISTANT: Ok, any other requirements?

USER: The ticket should be within price 200.

ASSISTANT: Ok, flight- 1014, airline- UA, price- 200 with connection matches your requested details. Shall I proceed?

USER: Please go ahead.

ASSISTANT: Ok, your ticket has been processed.

USER: Thank you.