You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I want to travel from DCA to CLT. Can you help me to book a flight ticket?

ASSISTANT: Sure, we are glad to help you. Can I have your travelling dates?

USER: I want to fly in the flight on Nov 01 and Nov 03.

ASSISTANT: Do you have any stopover in between journey?

USER: I am looking for a direct flight.

ASSISTANT: Is there any other specifications for you?

USER: No.

ASSISTANT: May I know your good name?

USER: Paul Adams.

ASSISTANT: Sorry, no flights are available on your journey routes.

USER: That's ok. Anyways, thank you.

ASSISTANT: Thank you for availing us.