You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I'm Ronald Davis here. I want to travel for a city roundup trip at New York, can you please help me to book a ticket from NY-JFK to NY-LGA?

ASSISTANT: Ok, may I know your preferable dates to travel?

USER: My dates of trip is from 01/10 to 01/12.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: Ok, no problem.

ASSISTANT: Thank you for connecting us.

USER: Welcome.