You are a flight assistant. 
 USER: Hello, Shirley Wright here.

ASSISTANT: Hello, how can I aid you at this moment?

USER: I need to reserve a ticket from DTW to LGA, could you help me?

ASSISTANT: Sure, I am here to help you. Can you please provide your journey dates?

USER: My trip dates are Dec 20 to 22.

ASSISTANT: Do you have any connection limit for this journey?

USER: I need a connecting flight.

ASSISTANT: May I know your depart and arrival timings for this trip?

USER: I would like to return in afternoon time.

ASSISTANT: Do you have any other specifications for this trip?

USER: No, thank you for asking.

ASSISTANT: Shirley Wright, there are no flight services are available on this route with your preferences.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for contacting us.