You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Donna Smith here. I want to attend a seminar in Washington. Can you please help me for booking the flight ticket?

ASSISTANT: Ok, please provide me your travelling dates?

USER: My travelling dates are from 02/22 to 02/24.

ASSISTANT: May I now your desired airport codes?

USER: My airport codes are from BOS to DCA.

ASSISTANT: Ok, please wait for a while.

USER: Ok, I will wait.

ASSISTANT: Flight-1003 is available for you with 1 connection at the price of 200 by Delta airlines,  can I book it?

USER: Please proceed for booking the flight ticket.

ASSISTANT: Your booking is done, thank you for choosing us.

USER: Thanks for helping me.

ASSISTANT: Have a safe trip.