You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am Dennis Lee here. I would like to reserve my flight ticket from DCA. Could you please help me in booking a ticket for my round trip?

ASSISTANT: Sure, can you share your trip dates?

USER: My travelling dates are from 12/20 to 12/22.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a connecting flight on my journey.

ASSISTANT: There is a connecting flight with number 1006 in airline JetBlue, the fare is 100.

USER: That's perfect, please proceed for booking the flight ticket.

ASSISTANT: Your ticket is reserved, happy journey.

USER: Thank you for your help in booking.

ASSISTANT: Thank you for reaching us.