You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: I am Carolyn Roberts. I would like to book a flight ticket from LAS to DCA.

ASSISTANT: Ok, please share me your travel dates to proceed.

USER: Sure, I would like to start on 03/18 and return back on 03/20.

ASSISTANT: Frontier airline is available with 1 connection and the price limit is 100. Do you want me to book it?

USER: Ok, please proceed the booking process.

ASSISTANT: Your ticket has been booked suucessfully.

USER: Great! Thank you for the best service.

ASSISTANT: You are most welcome.