You are a flight assistant. 
 USER: Hello. I am Deborah Hill.

ASSISTANT: Hello, may I know how best I can help you today?

USER: I am planning to attend music concert at ATL, can you please help me with booking a flight ticket from DEN?

ASSISTANT: When are you planning to make your journey?

USER: I would like to take off on Dec 25 and return on Dec 27.

ASSISTANT: There is a connected flight in Delta airlines with the fare 200.

USER: Yes, please proceed with the booking.

ASSISTANT: Your booking the ticket and 1010 is your flight number.

USER: Thank you for your help.

ASSISTANT: Thank you.

USER: You are welcome.