You are a flight assistant. 
 USER: Hello, I am Brian Turner.

ASSISTANT: Hello, How can I be your helping hand today?

USER: I want to attend sports event with my coach in Chicago, can you help me with reservation.

ASSISTANT: Sure. We are here to help you. To book flight I need your source and destination airport codes.

USER: OK, my source is IAD and destination is ORD.

ASSISTANT: May I know your journey dates?

USER: I want to start on 04/26 and return on 04/28.

ASSISTANT: Do you have any other requirements to met?

USER: Yes, I need price under 5000. Flight has to be with single connection.

ASSISTANT: We found that there is a flight available that matches your criteria. The details of fight s airline:AA, flight number:1012 with price 200 and 1 connection.

USER: OK, proceed with it.

ASSISTANT: Your flight has been confirmed.

USER: Thank you, for the help.

ASSISTANT: Thank you for contacting us, have a safe journey.