You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: I need to attend my graduation ceremony, can you please book the ticket from EWR to MCO?

ASSISTANT: Sure, could I have your trip dates, please?

USER: Sure, my planned departure and return travel dates are 27th and 29th of June.

ASSISTANT: Is there any connection limit?

USER: I prefer single connected flight to travel.

ASSISTANT: May I know your good name?

USER: My name is Kevin Lee.

ASSISTANT: Do you have any more specifications?

USER: Yes, I want to travel in business class ticket and I want to depart in the morning time.

ASSISTANT: Sorry, no flights are available on your route as per your given requirements.

USER: Oh! That's ok, thank you for giving the information anyways.

ASSISTANT: Thank you for choosing us.