You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Carol Rodriguez. Can you please help me to book a ticket from DFW to EWR?

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

USER: My travelling dates will be on Nov 29 to Dec 1.

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

USER: I need a connecting flight.

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

USER: I want to depart in the afternoon.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: Ok, not an issue. Thank you.

ASSISTANT: You are welcome.