You are a flight assistant. 
 USER: Hello, Sharon Green here.

ASSISTANT: Hello, how may I render you today?

USER: Can you book a flight ticket from DEN to LAS, please?

ASSISTANT: Sure, on which dates would you like to travel?

USER: October 6 and 8 are my planned travel dates.

ASSISTANT: Do you have any class preference?

USER: No, I don't have any class preference.

ASSISTANT: Can you please let me know the other specifications?

USER: I wish to return in the afternoon.

ASSISTANT: Ok, please wait.

USER: Sure, I will wait.

ASSISTANT: We found an United Airlines with flight number 1004 having an economy class returns in the afternoon at 17:00 PM. Shall I proceed to book?

USER: If it is a connecting flight, please book the ticket.

ASSISTANT: Your booking has confirmed in connecting flight.

USER: Thank you very much for the help.

ASSISTANT: Thank you for approaching us.