You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you today?

USER: I am Eric Martinez. Can you please help me in making an airline reservation from DFW to DTW?

ASSISTANT: Sure, may I know your planned trip dates?

USER: My planned trip dates are July 27th and July 29th.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a single connection.

ASSISTANT: May I know your arrival and depart timings?

USER: The return time should be evening.

ASSISTANT: Do you have any more specifications?

USER: No.

ASSISTANT: Sorry, there are no flights found on your specified travel dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for availing us.