You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am willing to book a flight from DTW to reach HOU, so please help me in booking.

ASSISTANT: Sure, may I know your planned travel dates please?

USER: My scheduled dates are on Dec 7th to 9th.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I need a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: I would like to return in evening time.

ASSISTANT: May I know your good name please?

USER: Sure, my name is Linda Jackson.

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

USER: No issues, thank you.

ASSISTANT: You are welcome.