You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me to search a flight with 0 connection limit?

ASSISTANT: Sure, I will help you, may I know your travelling dates?

USER: Thank you, the travelling dates are 04/02 to 04/04.

ASSISTANT: May I know your source and destination codes?

USER: The source code is from DC-DCA and the destination airport code is NC-CLT.

ASSISTANT: Please mention your price which helps me in booking a ticket under your range.

USER: Sure, my budget is only 1000.

ASSISTANT: There is a connecting flight which matches your travelling dates. Shall I proceed with booking?

USER: No, I want the direct flight.

ASSISTANT: Sorry, we could not find any direct flights.

USER: No problem, I will search another way to complete my trip.

ASSISTANT: Sure, do you need any other help form me?

USER: No, thank you for your information.

ASSISTANT: Thank you for approaching us.