You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I need your help in reserving a flight ticket from Denver to Los Angeles. Can you please find a flight for me?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: Thank you. My preferable travel dates are Apr 11th and Apr 13th.

ASSISTANT: Please mention your airport codes that you want to travel.

USER: Ok, I want to travel from the airport DEN to reach LAX.

ASSISTANT: Please mention your name.

USER: My name is Brandon Davis.

ASSISTANT: Please give me a moment.

USER: Ok, please make sure that the flight ticket fare should not exceed 200.

ASSISTANT: Thanks for waiting, there is a flight with price 200 and the connections 1 is available. Shall I confirm your ticket?

USER: I am ok with this flight details, please proceed with the ticket booking.

ASSISTANT: Your ticket is booked. The flight number is 1021 and the airline is AA.

USER: Thank you for helping me in booking the flight ticket.

ASSISTANT: Welcome, have a great day.