You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you for today?

USER: I would like to attend a conference in Washington, please help me to book a ticket?

ASSISTANT: Sure, we are here to help you. Can you share your journey dates?

USER: I would like to leave between 06/30 and 07/02.

ASSISTANT: May I know your airport codes?

USER: My airport codes are from ATL to IAD.

ASSISTANT: May I know your good name for further process?

USER: My name is Mark Walker.

ASSISTANT: We are glad to inform you that, I have found a flight with your details.

USER: May I know the flight details?

ASSISTANT: Airline is Delta and the flight number is 1021 with the price of 100. Shall I proceed?

USER: Ok, You can proceed for booking.

ASSISTANT: Your reservation is done.

USER: Thank you so much for booking.

ASSISTANT: Thank you for choosing us. Have a great fly.