You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you please book a flight ticket from DTW to IAD?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: Sure, I have planned my travel dates as June 19 and June 21.

ASSISTANT: Can you please share your connection limit?

USER: I am looking for single connecting flight.

ASSISTANT: May I know your name please?

USER: Sure, myself Brandon Roberts.

ASSISTANT: Is there any class preference?

USER: Yes, I would prefer economy class to travel.

ASSISTANT: Wait a moment please.

USER: Sure, take your time.

ASSISTANT: Frontier airlines is providing direct flight for you with the fare of 300 in economy class, shall I proceed with the booking?

USER: That  is fine, please proceed with booking.

ASSISTANT: Your ticket is booked with the flight-1012.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.

USER: Most welcome.