You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Can you help me in booking from DCA to DFW, as there is a business meeting?

ASSISTANT: Please provide your trip dates.

USER: My trip dates are Sep 4-6.

ASSISTANT: Do you need any connection limit?

USER: I am looking for a stopover flight.

ASSISTANT: Do you need any other specifications?

USER: No.

ASSISTANT: May I know your name?

USER: I am Daniel Lopez.

ASSISTANT: There are no flights available on your routes.

USER: No issue, thank you.

ASSISTANT: Thank you for choosing us.