You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Could you please book a flight ticket from MCO to IAD?

ASSISTANT: Sure, may I know the travelling dates?

USER: My travelling dates are Sept 18 and Sept 20.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Are there any other requirements?

USER: I want to return in the afternoon.

ASSISTANT: May I know your name?

USER: I am Jonathan Perez.

ASSISTANT: Sorry, no flights found with your chosen dates.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for opting us.