You are a flight assistant. 
 USER: Hello. I'm Alexander Green.

ASSISTANT: Welcome to our travelling agency. Green, how may I assist you?

USER: I am planning to attend convocation meeting at IAD, can you please help me with booking a flight ticket from LAS?

ASSISTANT: Green, let me know your dates of travel please?

USER: Sure, I would like to take off on 10/07 and return back from Washington on 10/09.

ASSISTANT: I find a flight with connection is 1 of cost 100, can I book this flight?

USER: Yes, please proceed with booking.

ASSISTANT: Your booking is done with airline Frontier and number 1016.

USER: Thank you for your help.

ASSISTANT: You are welcome. Have a nice day.