You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can i help you today?

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

ASSISTANT: Sure, please share your planned trip dates?

USER: My trip dates are May 8 to May 10.

ASSISTANT: Can I have your name please?

USER: Pamela Baker.

ASSISTANT: Let me know your connection limit?

USER: I need a single connection of flight.

ASSISTANT: Any class preference?

USER: I would like to prefer economy class.

ASSISTANT: Any other requirements to be met?

USER: I looking for a flight with normal cost.

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

USER: No problem, thanks for your information.

ASSISTANT: Thank you for reaching us.