You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you aid me to book a ticket from MCO to EWR?

ASSISTANT: Let me know your travel dates.

USER: My travel dates are June 23 and June 25 respectively.

ASSISTANT: Do you have any preference?

USER: No preferences for me, you can book a ticket.

ASSISTANT: Can I know your name?

USER: Jonathan Hernandez here.

ASSISTANT: Sorry, no flights found for your travelling dates.

USER: Thank you for the help.

ASSISTANT: Thank you.