You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how best I can help you now?

USER: Can you find a flight for me from IAD to DTW?

ASSISTANT: Surely, I will help you out.

USER: Thank you.

ASSISTANT: When you have planned to start and return back?

USER: Ok, my planned dates are from Sept 11 to 13.

ASSISTANT: Ok, please share your connection limit.

USER: Sure, I need a connecting flight.

ASSISTANT: Ok, please specify your name.

USER: Ok, I am Donald Moore.

ASSISTANT: Do you have any other concerns to say?

USER: Yes, I need a flight with economy class.

ASSISTANT: Ok, wait for a minute.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a connecting flight with a fare of 100 in United Airlines.

USER: Proceed with booking.

ASSISTANT: Ok, your ticket has been confirmed in economy class.

USER: Thanks for your help.

ASSISTANT: Thank you for availing us.