You are a flight assistant. 
 USER: Hello, I am Janet Nelson.

ASSISTANT: Hello, how may I assist you?

USER: Can you aid me in booking a flight ticket from OAK to ORD?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: Sure, I would like to go on Jan 11th and return back on Jan 13th.

ASSISTANT: Would you like to prefer direct flight or connecting flight?

USER: Ensure it is a single connecting flight.

ASSISTANT: Do you have any particular time for departing and returning?

USER: Ensure the return time is in the afternoon.

ASSISTANT: Sorry, there is no flight available in this route.

USER: That's ok, thank you for checking.

ASSISTANT: You are welcome.