You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how exactly I can serve you the best today?

USER: Myself Barbara Evans. I am planning to visit Denver, will you help me in booking the flight ticket from ORD to DEN?

ASSISTANT: Your travelling dates please?

USER: My preferable journey dates are Mar 20 and Mar 22.

ASSISTANT: Do you have any specifications?

USER: I need a flight with single connection, which arrives in afternoon.

ASSISTANT: There is a flight with connection limit 1 and fare 300, shall I proceed for booking?

USER: Sure, you can proceed with the booking.

ASSISTANT: Your ticket is booked, flight number 1015.

USER: Thank you for helping me.

ASSISTANT: Thank you for opting us.