You are a flight assistant. 
 USER: Hi. I am Charles Davis.

ASSISTANT: Hello, how can I serve you today?

USER:  I want to see the West Coast's tallest building named Smith Tower at Washington, DC-DCA, can you please avail me a flight ticket?

ASSISTANT: Sure, I will help you with booking.

USER: Thank you.

ASSISTANT: Please share me your planned journey dates?

USER: Sure, my travelling dates are 09/16 and 09/18.

ASSISTANT: Do you want any halt in between your flight journey?

USER: Yes, I need.

ASSISTANT: Please mention your source airport code?

USER: Sure, it is NY-EWR.

ASSISTANT: Thank you for the details, I found a connecting flight 1001 o airline Delta and fare is 200. Shall I proceed with booking?

USER: Please proceed with booking.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for visiting us.