You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Can you aid me to book a flight ticket from DTW to PHL?

ASSISTANT: Can I have your journey dates?

USER: My trip dates are Oct 28 and Oct 30 respectively.

ASSISTANT: Do you need any connection limit?

USER: I prefer for connecting flight.

ASSISTANT: Do you have any other specifications?

USER: My return time should be in the morning.

ASSISTANT: May I know your name?

USER: Joseph Perez here.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: Thank you.

ASSISTANT: Thank you for choosing us.