You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I need to book a flight ticket from DTW to IAD to meet my friend. Can you please book a direct flight ticket?

ASSISTANT: Sure, could you please share your travelling dates?

USER: Sure, my journey dates are Oct 06 and Oct 08.

ASSISTANT: Do you have any other specifications to be met?

USER: I looking for return flight time at evening. I prefer a normal cost airline.

ASSISTANT: Are you looking for any preferred class?

USER: No.

ASSISTANT: Can I have your name to proceed?

USER: I am Steven White.

ASSISTANT: please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your time, unfortunately no flights available on that route.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for reaching us.