You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am David Green.

ASSISTANT: How can I aid you today?

USER: I want to travel from ATL to ORD. Can you help me in booking a flight ticket?

ASSISTANT: Sure, I am here to help you. Could you please share your travelling dates?

USER: I want to travel in the month of May on 19 and 21.

ASSISTANT: May I know your price limit?

USER: My budget for ticket is 500.

ASSISTANT: Ok, please hold on.

USER: Ok.

ASSISTANT: There is a Southwest 1006 airline with fare of 100 and a halt in between the journey. Shall I proceed with booking?

USER: Proceed to booking.

ASSISTANT: Your booking has been confirmed on name of David Green.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us, have a nice day.