You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: David Martinez here.

ASSISTANT: How can I aid you at this moment?

USER: I would like to visit Denver to meet my old friend there. Can you please help me out with booking of a flight ticket to go there?

ASSISTANT: Sure, I will aid you with that. Can you please mention your travel dates for booking flight ticket?

USER: Thank you for accepting my request. I am planning to leave my location on 03/03 and please confirm my return ticket also on 03/05.

ASSISTANT: May I know your preferable airport code names for further process?

USER: Sure, I will prefer IAH and DEN as my origin and destination airport codes respectively.

ASSISTANT: Please hold on a moment, I will check flight availability in this route.

USER: Ok, take your time.

ASSISTANT: Based on your information, AA airline is ready to serve you with 1 connection with a minimum fare of 200 is available for you. Shall I proceed with this?

USER: Everything is matches with my requirements, you can proceed with booking.

ASSISTANT: Your flight ticket is booked successfully, flight number is 1004.

USER: Thank you for your help in booking of my ticket, have a great day.

ASSISTANT: Thank you for choosing us, have a good day.

USER: Welcome.