You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am planning to visit Denver, will you help me in booking the flight ticket from DTW to DEN?

ASSISTANT: Sure, I am glad to help you. Could you please share your trip dates?

USER: My preferable journey dates are Apr 22 and Apr 24.

ASSISTANT: May I know your connection limit?

USER: I need a flight with single connection.

ASSISTANT: Can you please share your airline preferences?

USER: I always prefer normal-cost airlines.

ASSISTANT: Do you have any specifications?

USER: My depart time must be in afternoon.

ASSISTANT: May I know your name?

USER: Andrew King here.

ASSISTANT: Here, there is a direct flight in AA airlines and price is 100. Shall I proceed?

USER: Sure, you can proceed with the booking.

ASSISTANT: Ok, your ticket has been booked with the flight 1015 and your depart time is 17:00PM.

USER: Thank you for helping me.

ASSISTANT: Thank you for approaching us.