You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Myself Nicole Campbell . I am looking for a connecting flight from DCA to DFW. Can you please help me out in booking a flight ticket?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: Ok, my travelling dates are from 09/20 to 09/22.

ASSISTANT: Just hold on a moment, I will check flight availability in this route.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry to say, no flights were found on your route.

USER: Not a problem, anyway thank you for your kind information.

ASSISTANT: Thank you for reaching us, have a nice day.