You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you at this moment?

USER: Can you please help me to book a flight ticket from DCA to JFK?

ASSISTANT: May I know your journey dates?

USER: My travelling dates are Nov 30 to Dec 2.

ASSISTANT: Is there any connection limit?

USER: I need a single connection of flight.

ASSISTANT: Do you have any other requirements?

USER: I would like to travel in big brand airlines.

ASSISTANT: Can you please help me with your good name?

USER: Brenda Allen here.

ASSISTANT: There were no flights found with your required dates to travel.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for opting us.