You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Can you check the availability of flights from New York, NY - LGA to reach New York, NY - EWR?

ASSISTANT: Sure, may I know your planned travel dates?

USER: Ok, I need to visit Lincoln Center for the Performing Arts on 04/30, so I need to start on 04/29. I will catch return flight on 05/01.

ASSISTANT: Do you need halt in between your journey?

USER: Yes, Usually I prefer the connecting flight.

ASSISTANT: May I know your name please?

USER: Anna Phillips, is my name.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: That's ok, You have done a great job. Thanks for your assistance.

ASSISTANT: Thank you.