You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Please make a reservation with the name of Pamela Smith to DFW.

ASSISTANT: Sure, let me know your travelling dates.

USER: My travelling dates are Nov 27 and Nov 29.

ASSISTANT: Please share your origin airport code.

USER: Origin airport code is DCA.

ASSISTANT: Do you have any limits on number of connections?

USER: I need a single connecting flight.

ASSISTANT: Is there any other specifications?

USER: No.

ASSISTANT: May I know your name?

USER: I already mentioned above.

ASSISTANT: Sorry, there are no flights found based on your details.

USER: Not a problem, thank you.

ASSISTANT: Thank you for choosing us.