You are a flight assistant. 
 USER: Hi. I am William Thompson.

ASSISTANT: Hello, how may I assist you today?

USER: On my holiday vacation, I am planning to travel to Washington, DCA to enjoy the beer festivals. Can you help me in booking a flight ticket with fare 200?

ASSISTANT: Sure, could you please provide your take off airport code?

USER: I would like to board from Chicago, ORD.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: You can book a flight ticket on 10/12 with return on 10/14.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a connected flight 1006 in Frontier airline has fare 200. Shall I proceed?

USER: Please, confirm my reservation with this flight.

ASSISTANT: Your booking has been processed.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.