You are a flight assistant. 
 USER: Hello, I am Jacob Roberts.

ASSISTANT: Hello, how may I help you?

USER: I would like to take single connecting flight, could you please help me booking?

ASSISTANT: Sure, please send your nearest airport abbreviations.

USER: Sure, my source and destination airport codes are DTW and DCA.

ASSISTANT: Please share your convenient dates.

USER: I would like to go on 06/27 and return back on 06/29.

ASSISTANT: Please hold on for a moment.

USER: Ensure it is a single connecting flight.

ASSISTANT: There is a single connection flight available with Frontier airlines, shall I book it?

USER: Ok, please proceed if it costs below 200.

ASSISTANT: Your ticket is confirmed, flight number is 1014. Happy journey.

USER: Thank you.

ASSISTANT: Welcome, thank you for contacting us.

USER: Welcome.