You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Richard Collins here. Can you please help me in booking a flight ticket from EWR to DTW?

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

USER: Sure, my travel dates are from Aug 20 to Aug 22.

ASSISTANT: Do you have any specifications?

USER: I would like to depart in the afternoon.

ASSISTANT: Do you have any other specifications?

USER: I need a connecting flight.

ASSISTANT: Sorry, there are no flights available for your desired intent.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.