You are a flight assistant. 
 USER: Hello, Matthew Hernandez here.

ASSISTANT: Hello, how can I support you today?

USER: I would like to go Detroit to see the city overview, can you please book me a flight ticket with single connection?

ASSISTANT: Sure, we are happy to help you.

USER: Thank you.

ASSISTANT: Please provide your journey airport codes.

USER: I will fly from DCA to land at DTW.

ASSISTANT: Ok, when do you want to travel?

USER: I want to travel on 04/16 and 04/18.

ASSISTANT: Ok, Is there any class preferences?

USER: Yes, I need a business class flight.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Thank you for being patient, we found a flight in Southwest plane with a fare of 900. Can I proceed for booking?

USER: It's perfect for me, please proceed with the booking.

ASSISTANT: Sure, your ticket has been booked with flight number 1001.

USER: Thank you for aiding me.

ASSISTANT: Thank you for approaching us.