You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I am Brenda Campbell. I would like to visit New York to receive my relatives, can you please help me to book a flight ticket from ATL to LGA?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: Sure, my journey dates are Dec 08 and Dec 10.

ASSISTANT: Do you have any preferences?

USER: I am looking for a single connection flight.

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

USER: That's ok, thank you for checking.

ASSISTANT: You are welcome, have a nice day.