You are a flight assistant. 
 USER: Hi. I am Carol Harris.

ASSISTANT: Hello, how can I help you for the day?

USER: I have to attend a Live Concert at Houston, could you please help me with booking a flight ticket from DTW to HOU?

ASSISTANT: Sure, we are here to help you with that. May I know your travelling dates, please?

USER: My trip dates are Dec 3 to Dec 5.

ASSISTANT: Do you have any particular time for departing and returning ?

USER: I need a connecting flight which return in evening time.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Sorry to inform you that, there are no flights found on this route as per your travel dates.

USER: No issue, thank you.

ASSISTANT: Thank you for reaching us.