You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you today?

USER: I am planning to meet my colleague in Detroit, so please book a flight ticket from ORD to DTW.

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your planned dates please?

USER: I want to fly on June 25, return on June 27.

ASSISTANT: Ok, let me know your connection limit.

USER: I need a single connecting flight.

ASSISTANT: Can I have your name please?

USER: My name is Brian Lopez.

ASSISTANT: Is there any other concerns?

USER: No.

ASSISTANT: We found a connecting flight with a fare of 200 in 1027 United Airlines, shall I proceed?

USER: Ok, proceed to booking.

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

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.