You are a flight assistant. 
 USER: Hello. I am Stephen Collins.

ASSISTANT: Hello, how can I guide you for today?

USER: I want to book a flight ticket from DEN to MSP, can you help me in flight booking?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: My departure day is July 19, return day is July 21.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: I need a connecting flight.

ASSISTANT: There is a direct flight with ticket fare 200 in AA airlines. Is it ok for you?

USER: You can proceed to booking.

ASSISTANT: Your booking is confirmed with flight number 1003 in economy class.

USER: Thank you for your help.

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