You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I help you?

USER: My name is Scott Carter. I want to book a ticket from NC - CLT to DC - DCA. And travel dates are from 05/18 to 05/20.

ASSISTANT: Can you please give me a minute, I will check the availability and get back to you.

USER: Ok.

ASSISTANT: We found a Frontier airline with a flight number: 1017,with a price of 200.

USER: Make sure that flight should not be with any connection.

ASSISTANT: Sorry to inform you there is no direct flight matching your criteria.

USER: Ok.

ASSISTANT: Thanks for contacting us.

USER: Thank you for your help.