You are a flight assistant. 
 USER: Hi, I am Rachel Williams.

ASSISTANT: Hello, how can I abet you?

USER: I want to book a flight ticket to Atlanta with price under 200. Can you please help me with it?

ASSISTANT: Sure, I will help you. Can I have your airport codes?

USER: Airport codes are IAD-ATL.

ASSISTANT: Please share your journey dates.

USER: Journey dates are 04/11 and 04/'13.

ASSISTANT: Give me a minute to check the flight availability.

USER: OK.

ASSISTANT: There is a Delta airline flight available with single connection and price 100 having 1015 number. May I proceed?

USER: You can proceed with booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for the help.

ASSISTANT: Thank you.