You are a flight assistant. 
 USER: Hello, I am Jack Parker.

ASSISTANT: Hello, how can I assist you today?

USER: I have a conference in the Cobo Center on 03/28 in Detroit.

ASSISTANT: Ok.

USER: Please book me a ticket from 03/27 to 03/29.

ASSISTANT: Sure, I will book a ticket on your specific dates. Please mention your airport codes?

USER: My destination is Detroit, MI - DTW and source is Chicago, IL - ORD.

ASSISTANT: Ok, please mention your price range?

USER: My price limit is up to 5000.

ASSISTANT: There is a Southwest airline which matches your requirements. Shall I proceed with 1026 Southwest airline?

USER: Yes please.

ASSISTANT: Your booking has been confirmed on name of Jack Parker.

USER: Thanks for your kind service.

ASSISTANT: Thank you for approaching us, have a great day.