You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Please help me to book a flight ticket from JFK to DCA.

ASSISTANT: Sure, please share your journey dates?

USER: My journey dates are from Dec, 26 to Dec, 28.

ASSISTANT: Do you have any specifications?

USER: I need a single connecting flight.

ASSISTANT: Is there any class preferences.

USER: No.

ASSISTANT: May I know your good name?

USER: Amy Edwards.

ASSISTANT: Sorry, no flights found on your given details.

USER: Thank you for your information.

ASSISTANT: Thank you for choosing us.