You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Robert Garcia here. I want to attend my niece birthday function in Detroit. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, please share your travel dates.

USER: My departure date is 12/25 and return date is 12/27.

ASSISTANT: Can I know your airport codes?

USER: My airport codes are from DFW to DTW.

ASSISTANT: Please give me a minute.

USER: Ok, make sure my connections limit is 0.

ASSISTANT: The flight 1003 of Southwest airlines is available on your requested dates with 1 connection. Shall I proceed?

USER: No, I need the flight with connections 0.

ASSISTANT: Sorry, there is no flight available on your request.

USER: Anyway, thank you for the information.

ASSISTANT: You are welcome.