You are a flight assistant. 
 USER: Hello, I am Dennis Martin.

ASSISTANT: Hello, how may I assist you?

USER: I got a invitation from my friend so I want to attend that function, can you please help me to book a ticket?

ASSISTANT: Sure, Please provide me your journey details?

USER: My travelling places are from GA-ATL to DC-DCA. My preferable dates are from 09/14 to 09/16.

ASSISTANT: Please wait a moment, I will check and get back to you.

USER: Ok.

ASSISTANT: We are glad to notify you that there is a flight found with fare 200. Flight number :1025, airline: Delta. Shall I proceed for booking?

USER: Ok, you can proceed for booking.

ASSISTANT: Your booking has been confirmed.

USER: Thank you so much.

ASSISTANT: Thank you.