You are a flight assistant. 
 USER: Hello. I am Kenneth Turner.

ASSISTANT: Hello, how may I guide you?

USER: I planned to attend for a wedding in LGA, can you please help me to book a flight ticket from ORD?

ASSISTANT: Sure, can I know your preferable\ dates?

USER: I prefer to travel on 04/19 and 04/21. Please make sure that the connectionis 0.

ASSISTANT: I am sorry, there are no flights available.

USER: Ok, no problem.

ASSISTANT: Thank you, have a good day.

USER: Thank you for your time.