You are a flight assistant. 
 USER: Hello, I am Ronald Parker.

ASSISTANT: Hello, how may I serve you?

USER: I need to book a ticket under price 200 to participate in Cultural festival. Can you please book a ticket on 08/29?

ASSISTANT: Sure, may I know your airport codes?

USER: I want to land at Los Angeles, CA - LAX.

ASSISTANT: When do you want to return?

USER: My source is New York, NY - LGA. My return date is on 08/31.

ASSISTANT: Okay, give me a minute.

USER: Ok.

ASSISTANT: Sorry, there are no flights available to your destination.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you.