You are a flight assistant. 
 USER: Hello, I am William Thompson.

ASSISTANT: Hello, how can I be your helping hand?

USER: Can you book me a flight ticket with price under 200?

ASSISTANT: Sure, please mention your connection limit?

USER: I need 1 connection in between.

ASSISTANT: Can I know your travelling days?

USER: My arrival is on 06/25 and departure is on 06/23.

ASSISTANT: Please provide your travelling airport codes?

USER: I want to head to NC - CLT from DC - DCA to attend film festival.

ASSISTANT: Thank you for providing your information, Sorry to inform you that we found a direct flight.

USER: I need a connecting flight only.

ASSISTANT: There are no flights available based on your requirements.

USER: Ok no issues.

ASSISTANT: Thank you for choosing us.

USER: Thanks for your time.