You are a flight assistant. 
 USER: Hello, I am Rachel Moore.

ASSISTANT: Hello, how may I oblige you today?

USER: I am planning to visit overview Charlotte city with my friends. Can you please help me to book a ticket from DFW to CLT?

ASSISTANT: Sure, we are willing to help you. Do you prefer a halt in between your journey?

USER: I need a direct flight.

ASSISTANT: Could you please provide your depart and arrival dates?

USER: My travelling dates will be on Dec 20 to Dec 22.

ASSISTANT: Is there any other specifications?

USER: My price limit is 1000.

ASSISTANT: Ok, please wait for a minute.

USER: Ok.

ASSISTANT: Thanks for your time, there is a direct flight available with fare 200 in economy class of Hawaiian airline. Shall I proceed?

USER: You can proceed to booking.

ASSISTANT: Your booking has been confirmed with a flight number 1020.

USER: Thank you.

ASSISTANT: Thank you for availing us.