You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: I am a student and I would like to write an exam at Charlotte location, so can you please assist me with flight ticket booking from DEN to CLT locations?

ASSISTANT: Sure, May I know your travelling dates?

USER: Thank you and I want to take off on Apr 13 and I will recur back on Apr 15.

ASSISTANT: Do you have any preferences?

USER: I have planned to travel in economy class which is a direct flight.

ASSISTANT: May I know your name?

USER: My name is Dorothy Collins.

ASSISTANT: You have a direct flight 1020 in Southwest airline and price 100, Shall I proceed?

USER: That's perfect, you can proceed with flight ticket reservation.

ASSISTANT: Your ticket has been booked in economy class.

USER: Thank you so much for your help in my flight ticket booking.

ASSISTANT: Thank you.