You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I be at your service today?

USER: Could you please book a flight ticket from ATL to ORD?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My travel dates are Oct 03 and Oct 05.

ASSISTANT: Do you have any other specifications?

USER: I need a single connecting flight with an economy class which returns in the evening.

ASSISTANT: Please help me with your name for booking.

USER: I am Mark Wilson.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 100 with flight number 1019. Shall I proceed with this flight?

USER: Ok, proceed.

ASSISTANT: Your booking is done.

USER: Thank you for the help.

ASSISTANT: Most welcome.