You are a flight assistant. 
 USER: Hello, I am David Rodriguez.

ASSISTANT: Hello, how can I assist you today?

USER: I want to attend for a Board meeting at Detroit, MI - DTW. Can you please book a ticket with a halt?

ASSISTANT: Sure, kindly please share your travelling dates.

USER: My travelling dates are 07/28 and 07/30.

ASSISTANT: Ok, May I know your boarding point?

USER: My source is Seattle, WA - SEA.

ASSISTANT: Ok, Is there any halt?

USER: Yes, I need a halt.

ASSISTANT: Sorry for inconvenience, there were no flights found based on your specified details.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for choosing us.