You are a flight assistant. 
 USER: Hello, I am Joseph Brown.

ASSISTANT: Hello Joseph, how may I aid you now?

USER: I would like to book a  flight ticket to Detroit for attending my college friend's marriage?

ASSISTANT: OK. May I know on which dates you are planning to travel?

USER: I want to travel on 03/14 and return on 03/16.

ASSISTANT: Kindly ensure your airport abbreviates here?

USER: My boarding is Washington, DC-IAD and landing at Detroit, MI-DTW.

ASSISTANT: Ok, if you have any specifications then please mention here?

USER: I need a stopover in between my journey. My price limit is 500.

ASSISTANT: Flight numbered 1017 in Frontier airline is available with fare 200. Shall I make it confirm?

USER: You can confirm my booking.

ASSISTANT: Ok, your booking is done.

USER: Thank you for your quick response.

ASSISTANT: Thanks for consulting us, have safe journey.