You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I have to participate in a fashion show, can you please book the ticket from IAD to LAS?

ASSISTANT: Sure, please share your journey dates?

USER: Sure, my planned departure and return travel dates are 17th and 19th of Dec.

ASSISTANT: Do you have any specifications?

USER: I prefer single connected flight to travel.

ASSISTANT: May I know your good name?

USER: My name is Debra Roberts.

ASSISTANT: We found a flight in Frontier airlines, flight number is 1003 with single connection and price is 200 economy class. Shall I proceed?

USER: Yes, proceed for booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you so much for your help.

ASSISTANT: Thank you for choosing us.