You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you today?

USER: I'm Anthony Gonzalez here. I want to visit RiverFront here at Detroit, can you please help me to book a ticket from DC-IAD on 07/27?

ASSISTANT: Sure, can I have your destination code and the return date please?

USER: Sure, my destination airport code is MI-DTW and my return date is 07/29.

ASSISTANT: Ok, wait for a minute.

USER: Sure, take your own time.

ASSISTANT: Yes, I found a flight-1009 with frontier airlines, can I proceed with the booking?

USER: Please make sure that connections limit is 1.

ASSISTANT: Yes Anthony, your ticket is reserved.

USER: Thank you for your help in reserving my ticket.

ASSISTANT: Thank you for contacting us. have a safe journey.

USER: Welcome.