You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Larry Green.

ASSISTANT: How can I assist you today?

USER: I am planning to visit Las Vegas, can you please book me a ticket from CLT to LAS?

ASSISTANT: Sure, I can help you with that. May I know your preferable travel dates please?

USER: My preferable journey dates are from 03/04 to 03/06.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your own time.

ASSISTANT: AA airlines is having a flight on that route with travel charge of 100, shall I proceed for booking?

USER: Sure, you can proceed for booking.

ASSISTANT: I have successfully booked your ticket with flight-1019, have a safe journey.

USER: Thank you for booking the ticket.

ASSISTANT: Thank you for choosing us.