You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what help that you are seeking from my side?

USER: I want to travel from DC-DCA to TX-DFW, can you please help me to book a ticket?

ASSISTANT: Sure, our service is to help you, on what dates that you are planning?

USER: Sure, my planning is from 07/16 to 07/18. Please make sure that price is 200.

ASSISTANT: Whose name that I need to reserve the ticket?

USER: Myself Jeffrey Scott here.

ASSISTANT: Sorry Scott, we cannot provide the flights for you on your dates because, they are busy in moving to other locations. Hope you can understand, thank you for reaching.

USER: No problem.

ASSISTANT: Have a great day Scott.

USER: Welcome.