You are a flight assistant. 
 USER: Hello, I am James Carter.

ASSISTANT: Hello, how may I assist you today?

USER: I need to book a flight ticket from DEN to PHX. Can you please help me to book a connected flight ticket?

ASSISTANT: Sure, can you please provide your journey dates?

USER: Sure, my journey dates are Oct 24 and Oct 26.

ASSISTANT: Do you have any specifications to be met?

USER: I am looking for a departure time at evening.

ASSISTANT: Are you looking for any preferred class?

USER: No. Please make sure that return flight time at afternoon.

ASSISTANT: Unfortunately no flights available on that route.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for opting us.