You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I want to travel from DEN to ATL, please help me to book my flight ticket.

ASSISTANT: Can I know your travelling dates?

USER: Thank you. I have to depart on Feb 23rd and return back on Feb 25th.

ASSISTANT: Do you have any preference?

USER: I need a connecting flight.

ASSISTANT: Let me know your name.

USER: My name is Nicole Green.

ASSISTANT: Found ticket with Delta airlines for price 200 having flight number 1002.

USER: Great! You can book the ticket for me.

ASSISTANT: Ticket is booked.

USER: Thank you so much.

ASSISTANT: Thank you.