You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Can you book a flight from IAD to visit ATL?

ASSISTANT: Sure, can you please mention your departure and arrival dates of your journey?

USER: I will depart on Feb 16 and return on Feb 18.

ASSISTANT: Do you need any flag stop in between journey?

USER: Yes, I want a flag stop in between my journey.

ASSISTANT: If you have any other preference regarding your journey?

USER: No.

ASSISTANT: May I know your name please?

USER: My name is Donald Martin.

ASSISTANT:  There is a flight in Frontier airlines with the ticket price of 100 having one connection and economy class. Can I proceed to booking?

USER: Please proceed with booking.

ASSISTANT: Your booking is confirmed and the flight number is 1019.

USER: Thank you for helping me.

ASSISTANT: Thank you very much for approaching our agency.