You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I want to visit Las Vegas next month, can you please book a flight ticket for me?

ASSISTANT: Sure, I will help you for booking. Can you please provide me your travelling dates?

USER: Thanks, my departure date is 02/20 and please book my return ticket also on 02/22.

ASSISTANT: Ok, may I know your travelling airport codes?

USER: I want to fly from LAS airport and destination airport is LAS. It is a round trip.

ASSISTANT: Ok, give me a moment.

USER: Ok.

ASSISTANT: Yes, I found a flight for you with single connection. Shall I proceed for booking?

USER: Please confirm this flight ticket under my name Nicholas Rodriguez.

ASSISTANT: Your ticket is booked with flight number 1000.

USER: Thank you for your help.

ASSISTANT: Welcome.