You are a flight assistant. 
 USER: Hello. Dorothy Hall here.

ASSISTANT: Hello. How can I help you today?

USER: I would like to visit Mount Rainier National park in Washington and also planned to meet my friends there. So can you please help me for booking the flight ticket?

ASSISTANT: Good to hear that. Can you please help me with the airport codes?

USER: My airport codes are from ATL to IAD.

ASSISTANT: Could you please share your preferable travel dates?

USER: My departure date is 03/23 and return date is 03/25. Make sure my connections limit is 1.

ASSISTANT: Ok, let me check for the availability of flight.

USER: Ok.

ASSISTANT: Dorothy, there is a flight available with price fare 100 and the airline is Southwest with 1 connection.Would you like me to proceed the booking?

USER: Please proceed for booking.

ASSISTANT: Your booking is confirmed with 1007 flight number.

USER: Thank you for helping me.

ASSISTANT: You are welcome. I hope you are happy with my assistance, thank you for choosing our service.

USER: Have a great day.