You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What help that I can do for your at this time?

USER: I want to reserve a flight to travel Detroit in the month of April with a direct flight.

ASSISTANT: Sure, may I know the dates of your travelling?

USER: My travelling dates are 04/03 and 04/05.

ASSISTANT: May I know your regional airport codes?

USER: Sure, my source code is ORD and destination code is DTW.

ASSISTANT: Please give me a moment. I found a direct flight, can I confirm your ticket booking?

USER: Yes, that's perfect book it for me.

ASSISTANT: Ok, the ticket booking is done in 1019 flight number in AA airlines to your region, have a happy journey.

USER: Thank you for booking my flight ticket for my journey.

ASSISTANT: May I know your name for reference purpose?

USER: Sure, I am Deborah Hall.

ASSISTANT: Ok, thank you.

USER: Most welcome.