You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER:  I have planned to book a ticket from OAK to MCO, can you assist me in booking my ticket?

ASSISTANT: Can you please provide me your itinerary travel dates?

USER: My trip dates are Mar 21st and Mar 23rd.

ASSISTANT: Could you let us know if you have any class preference?

USER: No, but make sure that I need to return in morning time.

ASSISTANT: Is there any connection limit?

USER: I need one connection between my trip.

ASSISTANT: Are there any more preferences that you want to avail?

USER: No, you can proceed booking.

ASSISTANT: May I know your name please?

USER: Gary Hill.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Gary Hill. I regret to inform that there are no flights on your route with the given dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.