You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am planning to book a ticket from DCA to CLT. Can you please help me out?

ASSISTANT: Sure, I am here to help you. When are you willing to travel?

USER: I am planning to travel on Oct 12 and return back on Oct 14.

ASSISTANT: Do you have any lay by in between journey?

USER: I am looking for a connecting flight.

ASSISTANT: Is there any other specifications for you?

USER: My depart time is morning and return time should be afternoon.

ASSISTANT: May I know your good name?

USER: My name is Angela Wilson.

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

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for contacting us.