You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you today?

USER: I want to visit Las Vegas in the month of September, can you please book me a ticket from IAD to LAS?

ASSISTANT: I am happy to help you, can you please let us know your trip dates?

USER: My travel dates are 09/19 and 09/21.

ASSISTANT: May I know your name please?

USER: My name is George Hall.

ASSISTANT: Hall, there is a flight-1013 available in Hawaiian airlines and the ticket fare is 200 only. Can I book the ticket?

USER: Yes, please proceed booking.

ASSISTANT: Your ticket is booked and have a nice day.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.