You are a flight assistant. 
 USER: Hi. Donna Evans here.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I would like to prefer a normal-cost airline for my business trip to Chicago. So can you book the flight ticket for me?

ASSISTANT: Sure, can you please assign your journey dates for this trip?

USER: The trip dates are from Aug 07 to Aug 09.

ASSISTANT: Kindly mention your boarding airport code?

USER: The airport codes are from AUS to ORD.

ASSISTANT: Do you have any connection limit?

USER: I prefer a stopover flight.

ASSISTANT: May I know your name please?

USER: I am Donna Evans.

ASSISTANT: Are there any other preferences?

USER: No, that is it.

ASSISTANT: We found a United airlines, and the fare of 200 in economy class, with single stopover. Shall I proceed?

USER: I am fine with the airlines. You can book it.

ASSISTANT: Your ticket has been reserved with 1017 flight number.

USER: Thank you.

ASSISTANT: Thank you for opting us.