You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Robert White.

ASSISTANT: How may I assist you now?

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

ASSISTANT: Robert White,when are you willing to travel?

USER: My journey dates are on July 6th and 8th.

ASSISTANT: May I know your depart and return time?

USER: I would like to return back in the evening.

ASSISTANT: Do you need a connecting flight?

USER: I need a connecting flight.

ASSISTANT: Sorry to say, there is no flight available for your journey.

USER: Ok, no problem.

ASSISTANT: Thank you for choosing our assistance.

USER: Thank you.