You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: Can you please help me to book a flight ticket from EWR to MCO?

ASSISTANT:  Sure, may I know your departure and arrival day?

USER: My travelling dates are Jan 15 to Jan 17.

ASSISTANT: Ok, could I have your name please?

USER: William King.

ASSISTANT: Ok, do you need direct or connecting flight?

USER: I need a connecting flight.

ASSISTANT: Ok, do you have any other specifications?

USER: No.

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

USER: No problem, thank you.