You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Gary Wilson here.

ASSISTANT: What services that you need from my side?

USER: I would like to visit Las Vegas for a business trip, can you please help me out with booking of a flight ticket to go there?

ASSISTANT: Yes, I am happy to help you.

USER: Thank you.

ASSISTANT: May I know your preferable planning trip dates?

USER: I would like to move on 03/03 and please book my return ticket on 03/05.

ASSISTANT: OK, can you please provide your to and from location airport codes?

USER: Sure, I want to travel from DCA to LAS.

ASSISTANT: According to your intent, I got a flight -1014 in Delta airlines with a connection limit of 1 when I search in our data base, can I confirm it?

USER: Yes, I am ok with this, you can proceed with booking.

ASSISTANT: Ok, on your request I ha confirmed your ticket booking to your region.

USER: You have done a great job, thank you for your assistance.

ASSISTANT: Have a happy journey and enjoy your flight trip.