You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am David Nelson. I want to book a flight ticket from BOS to DCA. Could you help me in booking?

ASSISTANT: Ok, please may I know the dates of your journey too?

USER: My travelling dates are from Feb 05-07.

ASSISTANT: There is a flight of business class with airfare 100 and the connection limit is 1. Can I book a flight ticket?

USER: Yes, please proceed.

ASSISTANT: The flight ticket is been booked and the flight number is 1008. the airlines which provides is Delta.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing our agency and hope the service we provided has reached your expectations.