You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Elizabeth Jackson. I want to meet my client at Denver, can you please help me to book my flight ticket from ATL to DEN?

ASSISTANT: Sure, let me know your travelling dates.

USER: Sure, I would like to depart in the evening on Sept 30 and I want to return back on Oct 2nd.

ASSISTANT: Can you please share your connection limit?

USER: I prefer for a single connection.

ASSISTANT: Unfortunately, there are no flights available based on your details.

USER: Sad to hear that. Thank you for checking.

ASSISTANT: Thank you for choosing us.