You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What help do you need from our agency?

USER: I want to attend a Seminar in Seattle. Can you please help me for booking the flight ticket?

ASSISTANT: Yes, I am happy to help you with that. Can I know your travel dates please?

USER: My travelling dates are Mar 24 and Mar 26.

ASSISTANT: Can you please let me know your source and destination airport codes?

USER: My airport codes are DTW and SEA.

ASSISTANT: Is there any specific timings for your journey?

USER: I want to depart in afternoon.

ASSISTANT: Ok, do you prefer a direct flight or a connecting flight to travel?

USER: I prefer single connecting flight.

ASSISTANT: Ok, may I know your name please?

USER: My name is Robert Allen.

ASSISTANT: Sorry to inform you that, there are no flights available which are departing in the afternoon time in this route.

USER: Anyway, thanks for the information.

ASSISTANT: You are most welcome. Thank you for choosing our agency.