You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: My name is Mark Nelson from Orlando and I want to visit New York to meet my professor. Can you please book ticket from MCO to LGA.

ASSISTANT: Let me know your travel dates?

USER: My travel dates are 08/11 and 08/13.

ASSISTANT: Do you prefer direct flight or connecting flight?

USER: I need a connecting flight.

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

USER: Ok, thank you for the information.

ASSISTANT: Thanks.