You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: I am looking for a flight from CLT to DCA, can you help me out?

ASSISTANT: Sure, can you please share your journey dates?

USER: My trip dates are from Oct 8th till Oct 10th.

ASSISTANT: Are you looking for any preferred connections?

USER: I am looking for a direct flight.

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

USER: I would like to return in afternoon session.

ASSISTANT: Can I have your name to proceed further?

USER: Myself Debra Martin.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

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

USER: That's ok, not an issue. Thank you.

ASSISTANT: Thank you for reaching us.