You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you for the day?

USER: I want to book a ticket from MCO to DEN. Could you book a ticket?

ASSISTANT: Sure, I am mirthful to help you with that. Can you please share your planned travel dates?

USER: Travel dates are June, 21 and June, 23.

ASSISTANT: May I know your name please?

USER: My name is Elizabeth Phillips.

ASSISTANT: Do you have any class preference?

USER: I would like to prefer economy class.

ASSISTANT: Is there any other requirements regarding your journey?

USER: I prefer connecting flight.

ASSISTANT: There are no flights found on this route as per your travel dates.

USER: Thank you.

ASSISTANT: Thank you for reaching us, have a great day.