You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Debra Brown.

ASSISTANT: How can I assist you today?

USER: I would like to book a ticket from DEN to ATL, can you please help me out?

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

USER: I am travelling on these dates 12/25 and 12/27.

ASSISTANT: Let me check for the availability of flight.

USER: Make sure my connection limit is 0.

ASSISTANT: Debra, I am sorry to inform you that there is no flight available at your request.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for contacting us, have a great day.