You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Brian Evans.

ASSISTANT: Brian Evans, how can I aid you today?

USER: I want to book a ticket from LAS to AUS, could you please help me to book a ticket?

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: My travelling dates are on Mar 25 and Mar 27.

ASSISTANT: Ok, hold on for a moment. Let me check the best flight for you.

USER: Sure.

ASSISTANT: I found a flight for you with American Airline and it costs you 300. Shall I proceed?

USER: You can proceed.

ASSISTANT: Your ticket has been booked with 1004 flight number.

USER: Thank you.

ASSISTANT: Welcome, thank you for choosing us. Have a safe flight.