You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Catherine Lewis. I am planning for a round trip from ATL, could you please help me with booking a flight ticket?

ASSISTANT: Sure, can you please share your travel dates?

USER: I would like to take off on 12/19 and return on 12/21.

ASSISTANT: Let me check for the availability of flight.

USER: Sure, take your time.

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

USER: Please confirm the booking.

ASSISTANT: Your booking is confirmed with 1000 flight number.

USER: Thank you for your help.

ASSISTANT: Thank you for contacting us.