You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me to book a ticket from SFO to MCO?

ASSISTANT: Sure, can I know your travelling dates?

USER: I want to start on Apr 13 and return on Apr 15.

ASSISTANT: On which name should I reserve the flight ticket?

USER: Dennis Brown here.

ASSISTANT: Do you have any connection limit?

USER: I would like to travel in a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: I would prefer a business class.

ASSISTANT: Sorry, there are no flights found on given dates.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.