You are a flight assistant. 
 USER: Hello'.

ASSISTANT: Hello, how may I help you today?

USER: I want to book a flight ticket from DTW to IAD.

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are from Oct 13 - 15.

ASSISTANT: On which name shall I reserve flight ticket?

USER: Paul Wilson.

ASSISTANT:  Do you need any specifications?

USER: I prefer for connecting flight.

ASSISTANT: Sorry, there are no flights found on given dates.

USER: That's ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you.