You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you now?

USER: I am Barbara Carter want to attend a workshop at Denver, can you book a ticket with price under 1000?

ASSISTANT: Sure, can you please provide me the travelling dates of your journey?

USER: Sure, my travelling dates will be 04/21 and 04/23.

ASSISTANT: Ok, may I know the airport codes please?

USER: Yes, I would like to depart from DTW and land on DEN.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Thank you for waiting, there is a direct flight.

USER: No, do not proceed with my booking as I need a connected flight.

ASSISTANT: Thank you for approaching us, have a nice day.

USER: Thank you.