You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am William Lopez. I want to book a ticket from LAS to ATL to attend seminar, can you help me in booking?

ASSISTANT: Sure, let me know your travelling dates?

USER: I am departing on June 20 and return on June 22.

ASSISTANT: May I know your connection limit?

USER: I need a flight with connection limit 1.

ASSISTANT: Can you please share your depart and arrival timings?

USER: I want to depart in evening time and return in evening time.

ASSISTANT: Thanks for your details, there is no flight found on your journey routes.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for availing us.